clarify FQCN needs for plugins (#58870)

* clarify FQCN requirement, fix example

docs/docsite/rst/collections_tech_preview.rst

@@ -297,6 +297,8 @@ This works for roles or any type of plugin distributed within the collection:
        tasks:
          - include_role:
              name : myname.mycol.role1
+         - myname.mycol.mymodule:
+             option1: value
 
          - debug:
              msg: '{{ lookup("myname.mycol.lookup1", 'param1')| myname.mycol.filter1 }}'
@@ -313,8 +315,11 @@ To avoid a lot of typing, you can use the ``collections`` keyword added in Ansbi
        tasks:
          - include_role:
              name: role1
+         - mymodule:
+             option1: value
 
          - debug:
-             msg: '{{ lookup("lookup1", 'param1')|filter1 }}'
+             msg: '{{ lookup("myname.mycol.lookup1", 'param1')| myname.mycol.filter1 }}'
 
 This keyword creates a 'search path' for non namespaced plugin references. It does not import roles or anything else.
+Notice that you still need the FQCN for non-action or module plugins.