Document all filter and test plugins (#4597) (#4604)

* Fix/improve docs.

* Document the a_module test.

* Document the dict filter.

* Linting.

* Add more filter docs.

* More filters.

* Update BOTMETA.

* Add another plugin.

* Fix typos.

* Add explicit entries.

* Fix lookup documentation.

(cherry picked from commit f055f47161)

plugins/lookup/cyberarkpassword.py

@@ -57,14 +57,19 @@ EXAMPLES = """
 """
 
 RETURN = """
-  password:
-    description:
-      - The actual value stored
-  passprops:
-    description: properties assigned to the entry
-    type: dictionary
-  passwordchangeinprocess:
-    description: did the password change?
+_result:
+  description: A list containing one dictionary.
+  type: list
+  elements: dictionary
+  contains:
+    password:
+      description:
+        - The actual value stored
+    passprops:
+      description: properties assigned to the entry
+      type: dictionary
+    passwordchangeinprocess:
+      description: did the password change?
 """
 
 import os