tweak the demo IVR to let people know they can enter an extension

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@9720 d0543943-73ff-0310-b7d9-9358b9ac24b2

conf/lang/en/demo/demo-ivr.xml

@@ -24,6 +24,8 @@
         <!-- note that you can do more than just play files, e.g. have pauses and do TTS -->
         <action function="execute" data="sleep(250)"/>
         <!-- Menu option 1: Call FreeSWITCH conference-->
+        <action function="play-file" data="ivr/ivr-enter_ext_pound.wav"/>
+        <action function="execute" data="sleep(250)"/>
         <action function="play-file" data="ivr/ivr-to_call_the_freeswitch_conference.wav"/>
         <action function="execute" data="sleep(250)"/>
         <action function="play-file" data="ivr/ivr-please.wav"/>