remove common return values from docs (#10485)

* remove common return values from docs

* pacman: add note about version added of RV

plugins/modules/catapult.py

@@ -95,14 +95,6 @@ EXAMPLES = r"""
     api_secret: "{{ api_secret }}"
 """
 
-RETURN = r"""
-changed:
-  description: Whether the API accepted the message.
-  returned: always
-  type: bool
-  sample: true
-"""
-
 
 import json