espeakdata: add a default group to the fa_rules file so it compiles correctly

android/res/raw/espeakdata_version

@@ -1 +1 @@
-4e695c136cee4b53f2dd2e229dbc00a1c63b6d0e
+15d5f6a94bb1ee0da076b7c653173c03df365f40

dictsource/fa_rules

@@ -5606,6 +5606,11 @@
 .group ؛
 	؛	
 
+// default group (required to compile correctly)
+
+.group
+        '
+
 
 
 // rules for Farsi written by English characters (Pinglish)