correct case error

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@6466 65c4cc65-6c06-0410-ace0-fbb531ad65f3

correct case error
e3ebb69f · Kevin P. Fleming · f3c46f8f · e3ebb69f
Commit e3ebb69f authored 19 years ago by Kevin P. Fleming
--- a/UPGRADE.txt
+++ b/UPGRADE.txt
@@ -148,5 +148,5 @@ chan_modem:

 * All the chan_modem channel drivers (aopen, bestdata and i4l) are deprecated
  in this release, and will be removed in the next major Asterisk release.
-  Please migrate to chan_mISDN for ISDN interfaces; there is no upgrade
+  Please migrate to chan_misdn for ISDN interfaces; there is no upgrade
  path for aopen and bestdata modem users.