Edited docstring again

Author: mmegs-amzn

src/aws_encryption_sdk/keyring/base.py

@@ -14,8 +14,7 @@
 
 
 class Keyring(object):
-    """Parent interface for Keyring classes.
-    """
+    """Parent interface for Keyring classes."""
 
     def on_encrypt(self, encryption_materials):
         """Generates a data key and encrypts it using all wrapping keys the Keyring is associated with.