update curfirmwareversion comment

app/special/curfirmwareversion.xml

@@ -1,8 +1,8 @@
 <?xml version="1.0" encoding="utf-8"?>
 
-<!-- This file is kept in source control because it reflects the last stable
-release.  It is used by the android app for forcing software updates.  Do not edit.
-Generated by Meshtastic-device/bin/buildall.sh -->
+<!-- This file is used by the android app for software updates.
+It reflects the firmware version included in: ./app/src/main/assets/firmware/
+Matches output from Meshtastic-device/bin/buildinfo.py 'long' & 'short' -->
 
 <resources>
     <string name="cur_firmware_version" translatable="false">0.2.0.abcdefg</string>