Update docstring

synapse/api/auth.py

@@ -246,7 +246,7 @@ class Auth(object):
         """ Get a registered user's ID.
 
         Args:
-            token (str)- The access token to get the user by.
+            token (str): The access token to get the user by.
         Returns:
             dict : dict that includes the user, device_id, and whether the
                 user is a server admin.

synapse/storage/registration.py

@@ -94,7 +94,8 @@ class RegistrationStore(SQLBaseStore):
         Args:
             token (str): The access token of a user.
         Returns:
-            str: The user ID of the user.
+            dict: Including the name (user_id), device_id and whether they are
+                an admin.
         Raises:
             StoreError if no user was found.
         """