doc: Add link to a npmjs wasm module (#1176)

Add link to npmjs wasm module.

https://www.npmjs.com/package/tplfa-jsonnet

Author: johnbartholomew

doc/ref/bindings.html

@@ -210,7 +210,10 @@ <h2 id="third_party_apis">Unofficial Third Party APIs</h2>
           <a href="https://github.com/yuduanchen/luajit-jsonnet">LuaJIT (FFI)</a>
         </li>
         <li>
-          <a href="https://github.com/yosuke-furukawa/node-jsonnet">Node.js</a>
+          <a href="https://github.com/yosuke-furukawa/node-jsonnet">Node.js node-jsonnet</a>: C++ version compiled to JS code
+        </li>
+        <li>
+          <a href="https://github.com/olpa/templating-for-api/tree/master/jsonnet-js-ts">Node.js tplfa-jsonnet</a>: Golang version compiled to WASM code
         </li>
         <li>
           <a href="https://github.com/Neeke/Jsonnet-PHP">PHP</a>