minor #1265 [StimulusBundle] Removing ux_controller_link_tags() mention for 6.4 (weaverryan)

This PR was merged into the 2.x branch.

Discussion
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[StimulusBundle] Removing ux_controller_link_tags() mention for 6.4

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | no
| Issues        | None
| License       | MIT

Eventually, we should remove this from the recipe as well - after AssetMapper 6.4 is out. https://github.com/symfony/recipes/blob/main/symfony/stimulus-bundle/2.9/manifest.json#L40

Commits
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e81521c [StimulusBundle] Removing ux_controller_link_tags() mention for 6.4

Author: weaverryan

src/StimulusBundle/doc/index.rst

@@ -432,16 +432,10 @@ will import all your custom controllers as well as those from ``controllers.json
 It will also dynamically enable "debug" mode in Stimulus when your application
 is running in debug mode.
 
-Finally, to output any ``autoimport`` CSS files in your ``controllers.json`` file,
-include the ``ux_controller_link_tags()`` function in your base template:
-
-.. code-block:: html+twig
-
-    {% block stylesheets %}
-        {{ ux_controller_link_tags() }}
+.. tip::
 
-        <!-- ... -->
-    {% endblock %}
+    For AssetMapper 6.3 only, you also need a ``{{ ux_controller_link_tags() }``
+    in ``base.html.twig``. This is not needed in AssetMapper 6.4+.
 
 How are the Stimulus Controllers Loaded?
 ----------------------------------------