Merge pull request #290 from SumoLogic/sumo.176361.documentation.for.capability.names

SUMO-176361: add capability names to the doc

Author: troy-q-li

website/docs/r/role.html.markdown

@@ -27,8 +27,8 @@ The following arguments are supported:
 - `name` - (Required) The name of the role.
 - `description` - (Optional) The description of the role.
 - `filter_predicate` - (Optional) A search filter to restrict access to specific logs.
-- `capabilities` - (Optional) List of capabilities associated with this role.
-
+- `capabilities` - (Optional) List of capabilities associated with this role. For a complete list of capability names, please see `capabilities` field in the request of [CreateRole][2] endpoint.
+    
 The following attributes are exported:
 
 - `id` - The internal ID of the role.
@@ -41,3 +41,4 @@ terraform import sumologic_role.role 1234567890
 ```
 
 [1]: https://help.sumologic.com/Manage/Users-and-Roles/Manage-Roles
+[2]: https://api.sumologic.com/docs/#operation/createRole