minor #20849 Readd handling of fallback of bundles directory in Apache config (freecastle)

This PR was merged into the 6.4 branch.

Discussion
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Readd handling of fallback of bundles directory in Apache config

This rebases #20619 to 6.4.

Commits
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4742f5d Readd handling of fallback of bundles directory in Apache config

Author: javiereguiluz

setup/web_server_configuration.rst

@@ -178,6 +178,14 @@ directive to pass requests for PHP files to PHP FPM:
         #     Options FollowSymlinks
         # </Directory>
 
+        # optionally disable the fallback resource for the asset directories
+        # which will allow Apache to return a 404 error when files are
+        # not found instead of passing the request to Symfony
+        # <Directory /var/www/project/public/bundles>
+        #     DirectoryIndex disabled
+        #     FallbackResource disabled
+        # </Directory>
+
         ErrorLog /var/log/apache2/project_error.log
         CustomLog /var/log/apache2/project_access.log combined
     </VirtualHost>