Fix whitespace.
diff --git a/Doc/library/typing.rst b/Doc/library/typing.rst
index e11c0c2..6993b31 100644
--- a/Doc/library/typing.rst
+++ b/Doc/library/typing.rst
@@ -68,7 +68,7 @@
 
    UserId = NewType('UserId', int)
    some_id = UserId(524313)
-    
+
 The static type checker will treat the new type as if it were a subclass
 of the original type. This is useful in helping catch logical errors::