Add data option to docs for win_ping.

windows/win_ping

@@ -27,12 +27,21 @@ module: win_ping
 version_added: "1.7"
 short_description: A windows version of the classic ping module.
 description:
-     - Checks management connectivity of a windows host
-options: {}
+  - Checks management connectivity of a windows host
+options:
+  data:
+    description:
+      - Alternate data to return instead of 'pong'
+    required: false
+    default: 'pong'
+    aliases: []
 author: Chris Church
 '''
 
 EXAMPLES = '''
+# Test connectivity to a windows host
+ansible winserver -m win_ping
+
 # Example from an Ansible Playbook
 - action: win_ping
 '''