Spelling.

Lib/test/test_tokenize.py

@@ -56,7 +56,7 @@ doesn't match the first.
     ...     return tokens1 == tokens2
     ...
 
-There are some standard formattig practises that are easy to get right.
+There are some standard formatting practices that are easy to get right.
 
     >>> roundtrip("if x == 1:\\n"
     ...           "    print x\\n")