fix typo in identity/v3/endpoint.py

Change-Id: Idf57a6a988f5c0f20f3b0b19ab896642ce10d70b

Author: wanghonghw

openstackclient/identity/v3/endpoint.py

@@ -57,13 +57,13 @@ def get_parser(self, prog_name):
             dest='enabled',
             action='store_true',
             default=True,
-            help='Enable user',
+            help='Enable endpoint',
         )
         enable_group.add_argument(
             '--disable',
             dest='enabled',
             action='store_false',
-            help='Disable user',
+            help='Disable endpoint',
         )
         return parser
 
@@ -166,13 +166,13 @@ def get_parser(self, prog_name):
             dest='enabled',
             action='store_true',
             default=True,
-            help='Enable user',
+            help='Enable endpoint',
         )
         enable_group.add_argument(
             '--disable',
             dest='enabled',
             action='store_false',
-            help='Disable user',
+            help='Disable endpoint',
         )
         return parser