Removing unnecessary direction attributes

Referring to #1424, the edit removes the `@direction` information, except for the example that begins with numerals. (I am not 100% sure it is necessary for that example either, but keeping it there, to give at least one example of the key's usage).

index.html

@@ -1707,8 +1707,7 @@ <h3>Names and Descriptions</h3>
       "@language": "fr"
     }, {
       "@value": "جامعة المثال",
-      "@language": "ar",
-      "@direction": "rtl"
+      "@language": "ar"
     }],
     "description": [{
       "@value": "A public university focusing on teaching examples.",
@@ -1718,8 +1717,7 @@ <h3>Names and Descriptions</h3>
       "@language": "fr"
     }, {
       "@value": "جامعة عامة تركز على أمثلة التدريس.",
-      "@language": "ar",
-      "@direction": "rtl"
+      "@language": "ar"
     }]
   },
   "validFrom": "2015-05-10T12:30:00Z",
@@ -1731,8 +1729,7 @@ <h3>Names and Descriptions</h3>
     "@language": "fr"
   }, {
     "@value": "مثال الشهادة الجامعية",
-    "@language": "ar",
-    "@direction": "rtl"
+    "@language": "ar"
   }],
   "description": [{
     "@value": "2015 Bachelor of Science and Arts Degree",
@@ -1757,8 +1754,7 @@ <h3>Names and Descriptions</h3>
         "@language": "fr"
       }, {
         "@value": "بكالوريوس العلوم والآداب",
-        "@language": "ar",
-        "@direction": "rtl"
+        "@language": "ar"
       }]
     }
   }