Fix documentation for group_roles role

roles/group_roles/README.md

@@ -15,7 +15,7 @@ An Ansible Role to add roles to groups in Automation Hub.
 |`ah_request_timeout`|`10`|no|Specify the timeout Ansible should use in requests to the Galaxy or Automation Hub host.||
 |`ah_path_prefix`|""|no|API path used to access the api. Either galaxy, automation-hub, or custom||
 |`ah_configuration_async_dir`|`null`|no|Sets the directory to write the results file for async tasks. The default value is set to `null` which uses the Ansible Default of `/root/.ansible_async/`.||
-|`ah_groups`|`see below`|yes|Data structure describing your groups, described below.||
+|`ah_group_roles`|`see below`|yes|Data structure describing the roles which are applied to groups, described below.||
 
 ### Secure Logging Variables