Update links for JS implementations

Author: antonmedv

index.md

@@ -75,8 +75,8 @@ JSON is the most popular _data-interchange_ format. But it isn't a very good _co
 Follow [the specification](/spec/v0.1) for creating new implementations.
 
 * JavaScript <br/>
-  [maml.js](https://github.com/maml-dev/maml.js) <Badge type="tip" text="MAML v0.1" /><br/>
-  [maml-ast](https://github.com/maml-dev/maml-ast) <Badge type="tip" text="MAML v0.1" /><br/>
+  [maml](https://npmjs.com/package/maml) <Badge type="tip" text="MAML v0.1" /><br/>
+  [maml-ast](https://npmjs.com/package/maml-ast) <Badge type="tip" text="MAML v0.1" /><br/>
 
 * Python <br/>
   [maml-py](https://pypi.org/project/maml-py/) <Badge type="tip" text="MAML v0.1" />