Update index.html

index.html

@@ -305,7 +305,7 @@ function openEditor(e) {
                 `).join("\n")}
             <\/script>
             `;
-            o = o.replace(/iconUrl: 'marker-icon\.png'/, `iconUrl: '${location.origin}/marker-icon.png'`);
+            o = o.replace(/iconUrl: 'marker-icon\.png'/g, `iconUrl: '${location.origin}/marker-icon.png'`);
             document.getElementById("output-html").value = o;
         const input = document.getElementById('output-html').value;
         const output = document.getElementById('output-code');