Fix all wrong instances of "it's".
diff --git a/Lib/test/test_cl.py b/Lib/test/test_cl.py
index d3efe9f..abfe3c1 100755
--- a/Lib/test/test_cl.py
+++ b/Lib/test/test_cl.py
@@ -64,7 +64,7 @@
 
 
 # This is a very inobtrusive test for the existence of the cl
-# module and all it's attributes.
+# module and all its attributes.
 
 def main():
     # touch all the attributes of al without doing anything