Clean up and document the protocol handler

packages/desktop/src/index.html

@@ -1,12 +1,12 @@
 <!DOCTYPE html>
 <html>
-  <head>
-    <title>Dioxus app</title>
-    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-    <!-- CUSTOM HEAD -->
-  </head>
-  <body>
-    <div id="main"></div>
-    <!-- MODULE LOADER -->
-  </body>
+    <head>
+        <title>Dioxus app</title>
+        <meta name="viewport" content="width=device-width, initial-scale=1.0">
+        <!-- CUSTOM HEAD -->
+    </head>
+    <body>
+        <div id="main"></div>
+        <!-- MODULE LOADER -->
+    </body>
 </html>