small regex adjustment so we can dial PSTN numbers that happen to have 4000 in them

git-svn-id: http://svn.freeswitch.org/svn/freeswitch/trunk@13409 d0543943-73ff-0310-b7d9-9358b9ac24b2

conf/dialplan/default.xml

@@ -243,7 +243,7 @@
 
     <!-- voicemail main extension -->
     <extension name="vmain">
-      <condition field="destination_number" expression="^vmain|4000|\*98$">
+      <condition field="destination_number" expression="^vmain$|^4000$|^\*98$">
 	<action application="answer"/>
 	<action application="sleep" data="1000"/>
 	<action application="voicemail" data="check default ${domain_name}"/>