Fixing a typo

firebase_admin/_user_mgt.py

@@ -36,7 +36,7 @@
 class _Validator(object):
  """A collectoin of data validation utilities.
 
- Method provided in this class raise ValueErrors if any validations fail. Normal returns
+ Methods provided in this class raise ValueErrors if any validations fail. Normal returns
  signal success.
  """
 
@@ -128,7 +128,6 @@ def __init__(self, code, message, error=None):
  self.detail = error
 
 
-
 class UserManager(object):
  """Provides methods for interacting with the Google Identity Toolkit."""