Typo repair.

Misc/NEWS

@@ -127,7 +127,7 @@ Library
   that cooperate with the functions of the same name in the sys
   module.  A function registered with the threading module will
   be used for all threads it creates.
-  XXX Somebody forget to check these in to threading.py, although
+  XXX Somebody forgot to check these in to threading.py, although
   XXX some other library modules call them.  This will be repaired
   XXX before the final release.  For now, dummy settrace() and
   XXX setprofile() functions have been added to threading.py.