ipasmartcard_client_get_vars: Fix doc sections and agument spec

ansible-test with ansible-2.14 is adding a lot of new tests to ensure
that the documentation section and the agument spec is complete. Needed
changes:

DOCUMENTATION section

- `suboptions` needs to be removed without arguments
- `author` needs to be given with the github user also: `Name (@user)`

roles/ipasmartcard_client/library/ipasmartcard_client_get_vars.py

@@ -36,9 +36,8 @@ short_description:
   Get variables from ipaplatform and python interpreter used for the module.
 description:
   Get variables from ipaplatform and python interpreter used for the module.
-options:
 author:
-    - Thomas Woerner
+    - Thomas Woerner (@t-woerner)
 '''
 
 EXAMPLES = '''