Fix docstrings in keystoneclient

Trusts and service catalog had a few malformed docstrings
that caused warnings when building docs.

Change-Id: Iea8612c3aaebea54c00b02c73c77f0c9e79f86bc
Partial-Bug: #1315523

keystoneclient/service_catalog.py

@@ -205,7 +205,7 @@ class ServiceCatalog(object):
         :param string endpoint_type: Type of endpoint.
         :param string region_name: Region of the endpoint.
         :param string service_name: The assigned name of the service.
-        :
+
         """
         if not self.get_data():
             raise exceptions.EmptyCatalog('The service catalog is empty.')

keystoneclient/v3/contrib/trusts.py

@@ -39,6 +39,7 @@ class TrustManager(base.CrudManager):
                project=None, impersonation=False, expires_at=None,
                remaining_uses=None, **kwargs):
         """Create a Trust.
+
         :param string trustee_user: user who is capable of consuming the trust
         :param string trustor_user: user who's authorization is being delegated
         :param string role_names: subset of trustor's roles to be granted
@@ -48,6 +49,7 @@ class TrustManager(base.CrudManager):
         :param integer remaining_uses: how many times this trust can be used
                                        to generate a token. None means
                                        unlimited tokens.
+
         """
         # Convert role_names list into list-of-dict API format
         if role_names: