archive journal: fix sphinx markup errors making links 404

docs/archive-journal.rst

@@ -11,7 +11,7 @@ document for historical reasons.
 
 
 **WARNING:** this document is **work in progress** and not considered complete
-yet. Progress tracking is in [T2793](https://forge.softwareheritage.org/T2793).
+yet (tracking: `T2793 <https://forge.softwareheritage.org/T2793>`_).
 
 
 2020
@@ -20,38 +20,39 @@ yet. Progress tracking is in [T2793](https://forge.softwareheritage.org/T2793).
 * **2020-10-06 - 2020-11-23:** source code crawlers have been paused to avoid
   an out of disk condition, due to an unexpected delay in the arrival of new
   storage hardware. Push archival (both deposit and "save code now") remained
-  in operation.  (tracking: [T2656](https://forge.softwareheritage.org/T2656))
+  in operation. (tracking: `T2656 <https://forge.softwareheritage.org/T2656>`_)
 
 
 2018
 ----
 
-* **2018-03-21:** completed import of [Google
-  Code](https://en.wikipedia.org/wiki/Google_Code) Mercurial repositories
-  (tracking: [T682](https://forge.softwareheritage.org/T682))
+* **2018-03-21:** completed import of `Google Code`_ Mercurial repositories
+  (tracking: `T682 <https://forge.softwareheritage.org/T682>`_)
+
+.. _Google Code: https://en.wikipedia.org/wiki/Google_Code
 
 
 2017
 ----
 
-* **2017-10-02:** completed import of [Google
-  Code](https://en.wikipedia.org/wiki/Google_Code) Subversion repositories
-  (tracking: [T617](https://forge.softwareheritage.org/T617))
-* **2017-06-06:** completed import of [Google
-  Code](https://en.wikipedia.org/wiki/Google_Code) Git repositories (tracking:
-  [T673](https://forge.softwareheritage.org/T673))
+* **2017-10-02:** completed import of `Google Code`_ Subversion repositories
+  (tracking: `T617 <https://forge.softwareheritage.org/T617>`_)
+* **2017-06-06:** completed import of `Google Code`_ Git repositories
+  (tracking: `T673 <https://forge.softwareheritage.org/T673>`_)
 
 
 2016
 ----
 
-* **2016-04-04:** completed import of the
-  [Gitorious](https://en.wikipedia.org/wiki/Gitorious) (tracking:
-  [T312](https://forge.softwareheritage.org/T312))
+* **2016-04-04:** completed import of the `Gitorious`_ (tracking: `T312
+  <https://forge.softwareheritage.org/T312>`_)
+
+.. _Gitorious: https://en.wikipedia.org/wiki/Gitorious
 
 
 2015
 ----
 
-* **2015-07-28:** started archiving public [GitHub](https://github.com/)
-  repositories
+* **2015-07-28:** started archiving public `GitHub`_ repositories
+
+.. _GitHub: https://github.com