Fixed typos in the identity client

Change-Id: I76042110f5a008d4c097862a572448448f92a504

Author: alex

openstackclient/identity/v3/role.py

@@ -209,12 +209,12 @@ def get_parser(self, prog_name):
         user_or_group.add_argument(
             '--user',
             metavar='<user>',
-            help='Name or ID of user to list roles asssigned to',
+            help='Name or ID of user to list roles assigned to',
         )
         user_or_group.add_argument(
             '--group',
             metavar='<group>',
-            help='Name or ID of group to list roles asssigned to',
+            help='Name or ID of group to list roles assigned to',
         )
         return parser