corrected action plugin docs (#49321)

fixes #49277

docs/docsite/rst/plugins/action.rst

@@ -27,8 +27,10 @@ Action plugin are executed by default when an associated module is used; no acti
 Plugin List
 -----------
 
-You can use ``ansible-doc -t action -l`` to see the list of available plugins.
-Use ``ansible-doc -t action <plugin name>`` to see specific documentation and examples.
+You cannot list action plugins directly, they show up as their counterpart modules:
+
+Use ``ansible-doc -l`` to see the list of available modules.
+Use ``ansible-doc <name>`` to see specific documentation and examples, this should note if the module has a corresponding action plugin.
 
 .. seealso::