Merge branch '5.3' into 5.4

* 5.3:
  Restore the contents directive
  Fix bugs seen by `_build/build.php` diagnostics in 4.4
  Add missing symfony server reference

Author: javiereguiluz

index.rst

@@ -71,9 +71,9 @@ Components
 .. toctree::
     :hidden:
 
-    components/index
+    components/
 
-Read the :doc:`Components </components/index>` documentation.
+Read the :doc:`Components </components/>` documentation.
 
 Reference Documents
 -------------------

setup/docker.rst

@@ -49,7 +49,7 @@ After installing the package, rebuild your containers by running:
 Symfony Binary Web Server and Docker Support
 --------------------------------------------
 
-If you're using the :ref:`symfony binary web server` (e.g. ``symfony server:start``),
+If you're using the :ref:`symfony binary web server <symfony-local-web-server>` (e.g. ``symfony server:start``),
 then it can automatically detect your Docker services and expose them as environment
 variables. See :ref:`symfony-server-docker`.