Fix(l10n): Update translations from Transifex

Signed-off-by: Nextcloud bot <bot@nextcloud.com>

l10n/ar.js

@@ -16,6 +16,7 @@ OC.L10N.register(
     "Connected as {user}" : "متصل بصفته {user}",
     "Mark as read" : "تمييز كمقروء",
     "Unknown error" : "خطأ غير معروف",
+    "Author" : "الكاتب",
     "Owner" : "المالك",
     "Click to expand comment" : "إضغط للتوسع في الملاحظات"
 },

l10n/ar.json

@@ -14,6 +14,7 @@
     "Connected as {user}" : "متصل بصفته {user}",
     "Mark as read" : "تمييز كمقروء",
     "Unknown error" : "خطأ غير معروف",
+    "Author" : "الكاتب",
     "Owner" : "المالك",
     "Click to expand comment" : "إضغط للتوسع في الملاحظات"
 },"pluralForm" :"nplurals=6; plural=n==0 ? 0 : n==1 ? 1 : n==2 ? 2 : n%100>=3 && n%100<=10 ? 3 : n%100>=11 && n%100<=99 ? 4 : 5;"