Rename Web-Map-Custom-Element -> MapML.js in files

index.html

@@ -538,7 +538,7 @@ <h2><a href="#software-projects" class="anchor">🔗</a> Software projects</h2>
         make it possible to experiment with the proposed specifications:
       </p>
       <ul>
-        <li><a href="https://github.com/Maps4HTML/Web-Map-Custom-Element">Web-map custom element</a>
+        <li><a href="https://github.com/Maps4HTML/MapML.js">MapML implemented as custom elements</a>
           <p>
             A polyfill of the <a href="https://github.com/Maps4HTML/MapML-Proposal">MapML proposal</a>, as a set of HTML custom elements,  using Leaflet
             as the map rendering engine.