edit to index.html for proper repo address

index.html

@@ -16,7 +16,7 @@
   <script>
     window.$docsify = {
       name: 'Machine Learning for Beginners',
-      repo: 'https://github.com/jlooper/ml-for-beginners',
+      repo: 'https://github.com/Microsoft/ML-For-Beginners',
       relativePath: true
     }
   </script>