Change "from" to "From".

(related to issue ASTERISK-21903)


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/11@396199 65c4cc65-6c06-0410-ace0-fbb531ad65f3

UPGRADE.txt

@@ -19,7 +19,7 @@
 === UPGRADE-10.txt -- Upgrade info for 1.8 to 10
 ===
 ===========================================================
-from 11.5 to 11.6:
+From 11.5 to 11.6:
 * res_agi will now properly indicate if there was an error in streaming an
   audio file.  The result code will be -1 and the result returned from the
   the function will be RESULT_FAILURE instead of the prior behavior of always