Add a link to fiddle.html in the wasm test app index.html.

FossilOrigin-Name: 96c734c07acfbea153d9aaf293a28a2d49d78de19fec4fb90c4c08fb1fd0ddbd

ext/wasm/index.html

@@ -36,6 +36,8 @@
     </div>
     <div>The tests...
       <ul id='test-list'>
+        <li><a href='fiddle/fiddle.html'>fiddle</a> is an HTML front-end
+          to a wasm build of the sqlite3 shell.</li>
         <li><a href='demo-123.html'>demo-123</a> provides a
           no-nonsense example of adding sqlite3 support to a
           web page. </li>