Fix typo in comment
diff --git a/Lib/codecs.py b/Lib/codecs.py
index 711d67a..827719b 100644
--- a/Lib/codecs.py
+++ b/Lib/codecs.py
@@ -104,7 +104,7 @@
 
 #
 # The StreamWriter and StreamReader class provide generic working
-# interfaces which can be used to implement new encodings submodules
+# interfaces which can be used to implement new encoding submodules
 # very easily. See encodings/utf_8.py for an example on how this is
 # done.
 #