Fix-up docstrings after Connection() signature change.

Author: dhermes

packages/google-cloud-resource-manager/google/cloud/resource_manager/connection.py

@@ -21,12 +21,8 @@
 class Connection(_http.JSONConnection):
     """A connection to Google Cloud Resource Manager via the JSON REST API.
 
-    :type credentials: :class:`oauth2client.client.OAuth2Credentials`
-    :param credentials: (Optional) The OAuth2 Credentials to use for this
-                        connection.
-
-    :type http: :class:`httplib2.Http` or class that defines ``request()``.
-    :param http: (Optional) HTTP object to make requests.
+    :type client: :class:`~google.cloud.resource_manager.client.Client`
+    :param client: The client that owns the current connection.
     """
 
     API_BASE_URL = 'https://cloudresourcemanager.googleapis.com'