Fix a few typos and a double semicolon.  Patch by Eitan Adler.
diff --git a/Lib/ipaddress.py b/Lib/ipaddress.py
index 532e44e..39b3f74 100644
--- a/Lib/ipaddress.py
+++ b/Lib/ipaddress.py
@@ -723,7 +723,7 @@
             other: An IPv4Network or IPv6Network object of the same type.
 
         Returns:
-            An iterator of the the IPv(4|6)Network objects which is self
+            An iterator of the IPv(4|6)Network objects which is self
             minus other.
 
         Raises: