Update the Arabic script autonym for aeb

This is consistent with
https://gerrit.wikimedia.org/r/175972

data/langdb.yaml

@@ -7,7 +7,7 @@ languages:
   ady: [Cyrl, [EU, ME], Адыгэбзэ]
   ady-cyrl: [ady]
   ady-latn: [Latn, [EU, ME], Adygabze]
-  aeb: [Arab, [AF], زَوُن]
+  aeb: [Arab, [AF], تونسي]
   af: [Latn, [AF], Afrikaans]
   ahr: [Deva, [AS], अहिराणी]
   ak: [Latn, [AF], Akan]