Convert to reduced list of known types (#50010)

lib/ansible/modules/identity/cyberark/cyberark_authentication.py

@@ -91,11 +91,11 @@ cyberark_session:
     sample:
         api_base_url:
             description: Base URL for API calls. Returned in the cyberark_session, so it can be used in subsequent calls.
-            type: string
+            type: str
             returned: always
         token:
             description: The token that identifies the session, encoded in BASE 64.
-            type: string
+            type: str
             returned: always
         use_shared_logon_authentication:
             description: Whether or not Shared Logon Authentication was used to establish the session.

lib/ansible/modules/identity/keycloak/keycloak_client.py

@@ -596,7 +596,7 @@ RETURN = '''
 msg:
   description: Message as to what action was taken
   returned: always
-  type: string
+  type: str
   sample: "Client testclient has been updated"
 
 proposed:

lib/ansible/modules/identity/keycloak/keycloak_clienttemplate.py

@@ -212,7 +212,7 @@ RETURN = '''
 msg:
   description: Message as to what action was taken
   returned: always
-  type: string
+  type: str
   sample: "Client template testclient has been updated"
 
 proposed: