(Ara) Small typofix + add comment

src/arabic/StructuralAra.gf

@@ -88,7 +88,7 @@ concrete StructuralAra of Structural = CatAra **
 --  therefore_PConj = ss "تهرفْري" ;
 ----b  these_NP = indeclNP "هَؤُلَاء" Pl ;
   they_Pron = theyMasc_Pron ;
-  this_Quant = mkQuant7 "هَذا" "هَذِهِ" "هَذَان" "هَذَيْن" "هَاتَان" "هَاتَيْن" "هَؤُلَاء" Def ;
+  this_Quant = mkQuant7 "هَذَا" "هَذِهِ" "هَذَان" "هَذَيْن" "هَاتَان" "هَاتَيْن" "هَؤُلَاء" Def ;
 ----b  this_NP = indeclNP "هَذا" Sg ;
 ----b  those_NP = indeclNP "هَؤُلَاءكَ" Pl ;
   through_Prep = mkPrep "عَبْرَ" ;

src/arabic/VerbAra.gf

@@ -100,7 +100,7 @@ concrete VerbAra of Verb = CatAra ** open Prelude, ResAra, ParamX in {
     -- : VP -> Prep -> VPSlash ;  -- live in (it)
     VPSlashPrep vp prep = vp ** {
       c2 = prep ;
-      agrObj = \\_ => []
+      agrObj = \\_ => [] -- to make it into VPSlash, VP didn't have that field before
       } ;
 
     AdvVP vp adv = insertStr adv.s vp ;