Changed docstrings to conform to lastest updates of the interfaces
diff --git a/cryptography/hazmat/primitives/interfaces.py b/cryptography/hazmat/primitives/interfaces.py
index e81abfb..bca8d54 100644
--- a/cryptography/hazmat/primitives/interfaces.py
+++ b/cryptography/hazmat/primitives/interfaces.py
@@ -356,14 +356,13 @@
     @abc.abstractproperty
     def y(self):
         """
-        The DSAPublicKey associated with this private key.
-        Alias for public_key.
+        The integer value of y.
         """
 
     @abc.abstractproperty
     def params(self):
         """
-        The params associated with a DSA keypair
+        The DSAParams object associated with this private key.
         """
 
 
@@ -377,7 +376,7 @@
     @abc.abstractproperty
     def params(self):
         """
-        The params associated with a DSA keypair
+        The DSAParams object associated with this public key.
         """