Bug 1844802 - Restore links to GeckoView Contributor Guide r=firefox-source-docs-reviewers,sylvestre,geckoview-reviewers,m_kato DONTBUILD

D150200 broke this when changing the title and missed it, probably because breaking links only emits warnings instead of errors.

Differential Revision: https://phabricator.services.mozilla.com/D184245

docs/setup/linux_build.rst

@@ -113,7 +113,7 @@ Choosing a build type
 
 If you aren't modifying the Firefox backend, then select one of the
 :ref:`Artifact Mode <Understanding Artifact Builds>` options. If you are
-building Firefox for Android, you should also see the :ref:`GeckoView Contributor Guide`.
+building Firefox for Android, you should also see the :ref:`GeckoView Contributor Guide <geckoview-contributor-guide>`.
 
 3. Build
 --------

docs/setup/macos_build.rst

@@ -95,7 +95,7 @@ Choosing a build type
 
 If you aren't modifying the Firefox backend, then select one of the
 :ref:`Artifact Mode <Understanding Artifact Builds>` options. If you are
-building Firefox for Android, you should also see the :ref:`GeckoView Contributor Guide`.
+building Firefox for Android, you should also see the :ref:`GeckoView Contributor Guide <geckoview-contributor-guide>`.
 
 3. Build
 --------

docs/setup/windows_build.rst

@@ -78,7 +78,7 @@ Choosing a build type
 
 If you aren't modifying the Firefox backend, then select one of the
 :ref:`Artifact Mode <Understanding Artifact Builds>` options. If you are
-building Firefox for Android, you should also see the :ref:`GeckoView Contributor Guide`.
+building Firefox for Android, you should also see the :ref:`GeckoView Contributor Guide <geckoview-contributor-guide>`.
 
 .. _Ensure antivirus exclusions:
 

mobile/android/docs/geckoview/contributor/geckoview-quick-start.rst

@@ -1,5 +1,7 @@
 .. -*- Mode: rst; fill-column: 80; -*-
 
+.. _geckoview-contributor-guide:
+
 =================
 Contributor Guide
 =================