fix case of فاطفال:

assem-ch · assem-ch · commit a170474d4f38 · 2018-03-09T16:37:45.000+01:00
diff --git a/algorithm/stemmer.sbl b/algorithm/stemmer.sbl
@@ -398,8 +398,8 @@ define Prefix_Step2a as (
 
 define Prefix_Step2b as (
         $word_len = len
-        not '{f}{a}'
-        not '{w}{a}'
+        //not '{f}{a}'
+        //not '{w}{a}'
         [substring] among (
             '{f}' ($word_len > 3 delete)
             '{w}' ($word_len > 3 delete)
