feat: update web example setup

Author: deandreamatias

example/.metadata

@@ -15,7 +15,7 @@ migration:
     - platform: root
       create_revision: 35c388afb57ef061d06a39b537336c87e0e3d1b1
       base_revision: 35c388afb57ef061d06a39b537336c87e0e3d1b1
-    - platform: ios
+    - platform: web
       create_revision: 35c388afb57ef061d06a39b537336c87e0e3d1b1
       base_revision: 35c388afb57ef061d06a39b537336c87e0e3d1b1
 

example/web/index.html

@@ -21,7 +21,7 @@
   <meta name="description" content="A new Flutter project.">
 
   <!-- iOS meta tags & icons -->
-  <meta name="apple-mobile-web-app-capable" content="yes">
+  <meta name="mobile-web-app-capable" content="yes">
   <meta name="apple-mobile-web-app-status-bar-style" content="black">
   <meta name="apple-mobile-web-app-title" content="example">
   <link rel="apple-touch-icon" href="icons/Icon-192.png">