Small typo

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@10179 65c4cc65-6c06-0410-ace0-fbb531ad65f3

UPGRADE.txt

@@ -47,7 +47,7 @@ Functions:
   modules.conf file then you will need to explicitly load the modules that
   contain the functions you want to use.
 
-* The ENUMLOOP() function no longer supplies a default zone for searching; instead,
+* The ENUMLOOKUP() function no longer supplies a default zone for searching; instead,
   it uses the default zone(s) defined in enum.conf. In addition, when the 'c'
   option (for counting the number of records is specified), but the lookup fails
   to match any records, the returned value will now be "0" instead of blank.