diff --git a/docs/specs/metadata_example.xml b/docs/specs/metadata_example.xml
index a184c53f..b12356a2 100644
--- a/docs/specs/metadata_example.xml
+++ b/docs/specs/metadata_example.xml
@@ -1,30 +1,30 @@
 <?xml version="1.0"?>
-    <entry xmlns="http://www.w3.org/2005/Atom"
-             xmlns:codemeta="https://doi.org/10.5063/SCHEMA/CODEMETA-2.0"
-             xmlns:swh="https://www.softwareheritage.org/schema/2018/deposit">
-        <author>
-          <name>HAL</name>
-          <email>hal@ccsd.cnrs.fr</email>
-        </author>
-        <client>hal</client>
-        <codemeta:name>The assignment problem</codemeta:name>
-        <codemeta:url>https://hal.archives-ouvertes.fr/hal-01243573</codemeta:url>
-        <codemeta:identifier>other identifier, DOI, ARK</codemeta:identifier>
-        <codemeta:applicationCategory>Domain</codemeta:applicationCategory>
-        <codemeta:description>description</codemeta:description>
-        <codemeta:author>
-            <codemeta:name> author1 </codemeta:name>
-            <codemeta:affiliation> Inria </codemeta:affiliation>
-            <codemeta:affiliation> UPMC </codemeta:affiliation>
-        </codemeta:author>
-        <codemeta:author>
-            <codemeta:name> author2 </codemeta:name>
-            <codemeta:affiliation> Inria </codemeta:affiliation>
-            <codemeta:affiliation> UPMC </codemeta:affiliation>
-        </codemeta:author>
-        <swh:deposit>
-          <swh:create_origin>
-            <swh:origin url="http://has.archives-ouvertes.fr/hal-01243573" />
-          </swh:create_origin>
-        </swh:deposit>
-    </entry>
+<entry xmlns="http://www.w3.org/2005/Atom"
+       xmlns:codemeta="https://doi.org/10.5063/SCHEMA/CODEMETA-2.0"
+       xmlns:swh="https://www.softwareheritage.org/schema/2018/deposit">
+  <author>
+    <name>HAL</name>
+    <email>hal@ccsd.cnrs.fr</email>
+  </author>
+  <client>hal</client>
+  <codemeta:name>The assignment problem</codemeta:name>
+  <codemeta:url>https://hal.archives-ouvertes.fr/hal-01243573</codemeta:url>
+  <codemeta:identifier>other identifier, DOI, ARK</codemeta:identifier>
+  <codemeta:applicationCategory>Domain</codemeta:applicationCategory>
+  <codemeta:description>description</codemeta:description>
+  <codemeta:author>
+      <codemeta:name> author1 </codemeta:name>
+      <codemeta:affiliation> Inria </codemeta:affiliation>
+      <codemeta:affiliation> UPMC </codemeta:affiliation>
+  </codemeta:author>
+  <codemeta:author>
+      <codemeta:name> author2 </codemeta:name>
+      <codemeta:affiliation> Inria </codemeta:affiliation>
+      <codemeta:affiliation> UPMC </codemeta:affiliation>
+  </codemeta:author>
+  <swh:deposit>
+    <swh:create_origin>
+      <swh:origin url="http://has.archives-ouvertes.fr/hal-01243573" />
+    </swh:create_origin>
+  </swh:deposit>
+</entry>
diff --git a/docs/specs/spec-meta-deposit.rst b/docs/specs/spec-meta-deposit.rst
index ae905cb2..ff7b17e3 100644
--- a/docs/specs/spec-meta-deposit.rst
+++ b/docs/specs/spec-meta-deposit.rst
@@ -1,135 +1,135 @@
 .. _spec-metadata-deposit:
 
 The metadata-only deposit
 ^^^^^^^^^^^^^^^^^^^^^^^^^
 
 Goal
 ====
 
 A client may wish to deposit only metadata about an origin or object already
 present in the Software Heritage archive.
 
 The metadata-only deposit is a special deposit where no content is
 provided and the data transferred to Software Heritage is only
 the metadata about an object in the archive.
 
 Requirements
 ============
 
 1. Create a metadata-only deposit through a :ref:`POST request<API-create-deposit>`
 2. It is composed of ONLY one Atom XML document
 3. It MUST comply with :ref:`the metadata requirements<metadata-requirements>`
 4. It MUST reference an **object** or an **origin** in a deposit tag
 5. The reference SHOULD exist in the SWH archive
 6. The **object** reference MUST be a SWHID on one of the following artifact types:
    - origin
    - snapshot
    - release
    - revision
    - directory
    - content
 7. The SWHID MAY be a `core identifier`_ with or without `qualifiers`_
 8. The SWHID MUST NOT reference a fragment of code with the classifier `lines`
 
 .. _core identifier: https://docs.softwareheritage.org/devel/swh-model/persistent-identifiers.html#core-identifiers
 .. _qualifiers: https://docs.softwareheritage.org/devel/swh-model/persistent-identifiers.html#qualifiers
 
 A complete metadata example
 ===========================
 The reference element is included in the metadata xml atomEntry under the
 swh namespace:
 
 .. code:: xml
 
   <?xml version="1.0"?>
   <entry xmlns="http://www.w3.org/2005/Atom"
-           xmlns:codemeta="https://doi.org/10.5063/SCHEMA/CODEMETA-2.0"
-           xmlns:swh="https://www.softwareheritage.org/schema/2018/deposit">
-      <author>
-        <name>HAL</name>
-        <email>hal@ccsd.cnrs.fr</email>
-      </author>
-      <codemeta:name>The assignment problem</codemeta:name>
-      <codemeta:url>https://hal.archives-ouvertes.fr/hal-01243573</codemeta:url>
-      <codemeta:identifier>other identifier, DOI, ARK</codemeta:identifier>
-      <codemeta:applicationCategory>Domain</codemeta:applicationCategory>
-      <codemeta:description>description</codemeta:description>
-      <codemeta:author>
-        <codemeta:name> author1 </codemeta:name>
-        <codemeta:affiliation> Inria </codemeta:affiliation>
-        <codemeta:affiliation> UPMC </codemeta:affiliation>
-      </codemeta:author>
-      <codemeta:author>
-        <codemeta:name> author2 </codemeta:name>
-        <codemeta:affiliation> Inria </codemeta:affiliation>
-        <codemeta:affiliation> UPMC </codemeta:affiliation>
-      </codemeta:author>
-      <swh:deposit>
-        <swh:reference>
-          <swh:origin url='https://github.com/user/repo'/>
-        </swh:reference>
-      </swh:deposit>
+         xmlns:codemeta="https://doi.org/10.5063/SCHEMA/CODEMETA-2.0"
+         xmlns:swh="https://www.softwareheritage.org/schema/2018/deposit">
+    <author>
+      <name>HAL</name>
+      <email>hal@ccsd.cnrs.fr</email>
+    </author>
+    <codemeta:name>The assignment problem</codemeta:name>
+    <codemeta:url>https://hal.archives-ouvertes.fr/hal-01243573</codemeta:url>
+    <codemeta:identifier>other identifier, DOI, ARK</codemeta:identifier>
+    <codemeta:applicationCategory>Domain</codemeta:applicationCategory>
+    <codemeta:description>description</codemeta:description>
+    <codemeta:author>
+      <codemeta:name>Author1</codemeta:name>
+      <codemeta:affiliation>Inria</codemeta:affiliation>
+      <codemeta:affiliation>UPMC</codemeta:affiliation>
+    </codemeta:author>
+    <codemeta:author>
+      <codemeta:name>Author2</codemeta:name>
+      <codemeta:affiliation>Inria</codemeta:affiliation>
+      <codemeta:affiliation>UPMC</codemeta:affiliation>
+    </codemeta:author>
+    <swh:deposit>
+      <swh:reference>
+        <swh:origin url='https://github.com/user/repo'/>
+      </swh:reference>
+    </swh:deposit>
   </entry>
 
 References
 ==========
 
 The metadata reference can be either on:
 - an origin
 - a graph object (core SWHID with or without qualifiers)
 
 Origins
 -------
 
 The metadata may be on an origin, identified by the origin's URL:
 
 .. code:: xml
 
   <swh:deposit>
     <swh:reference>
       <swh:origin url="https://github.com/user/repo" />
     </swh:reference>
   </swh:deposit>
 
 Graph objects
 -------------
 
 It may also reference an object in the `SWH graph <data-model>`: contents,
 directories, revisions, releases, and snapshots:
 
 .. code:: xml
 
   <swh:deposit>
     <swh:reference>
       <swh:object swhid="swh:1:dir:31b5c8cc985d190b5a7ef4878128ebfdc2358f49" />
     </swh:reference>
   </swh:deposit>
 
 .. code:: xml
 
   <swh:deposit>
     <swh:reference>
       <swh:object swhid="swh:1:dir:31b5c8cc985d190b5a7ef4878128ebfdc2358f49;origin=https://hal.archives-ouvertes.fr/hal-01243573;visit=swh:1:snp:4fc1e36fca86b2070204bedd51106014a614f321;anchor=swh:1:rev:9c5de20cfb54682370a398fcc733e829903c8cba;path=/moranegg-AffectationRO-df7f68b/" />
     </swh:reference>
   </swh:deposit>
 
 
 The value of the ``swhid`` attribute must be a `SWHID <persistent-identifiers>`,
 with any context qualifiers in this list:
 
 * ``origin``
 * ``visit``
 * ``anchor``
 * ``path``
 
 and they should be provided whenever relevant, especially ``origin``.
 
 Other qualifiers are not allowed (for example, ``line`` isn't because SWH
 cannot store metadata at a finer level than entire contents).
 
 
 Loading procedure
 =================
 
 In this case, the metadata-deposit will be injected as a metadata entry of
 the relevant object, with the information about the contributor of the deposit.