fixed RETURN docs for modules (#24011)

* fixed RETURN docs for remaining modules

* updated proxymysql_mysql_users 'sample' to yaml dict

* fixed whitespace errors

lib/ansible/modules/files/archive.py

@@ -107,9 +107,11 @@ archived:
 arcroot:
     description: The archive root.
     type: string
+    returned: always
 expanded_paths:
     description: The list of matching paths from paths argument.
     type: list
+    returned: always
 '''
 
 import os

lib/ansible/modules/files/find.py

@@ -156,7 +156,7 @@ RETURN = '''
 files:
     description: all matches found with the specified criteria (see stat module for full output of each dictionary)
     returned: success
-    type: list of dictionaries
+    type: list
     sample: [
         { path: "/var/tmp/test1",
           mode: "0644",

lib/ansible/modules/files/stat.py

@@ -140,7 +140,7 @@ RETURN = '''
 stat:
     description: dictionary containing all the stat data, some platforms might add additional fields
     returned: success
-    type: dictionary
+    type: complex
     contains:
         exists:
             description: if the destination path actually exists or not