fix: made user scalable

examples/web/index.html

@@ -7,7 +7,7 @@
     <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
     <meta name="description" content="CHIP-8 emulator written in Rust 🦀." />
     <meta name="viewport"
-        content="width=device-width, user-scalable=no, initial-scale=1, minimum-scale=1, maximum-scale=5" />
+        content="width=device-width, user-scalable=yes, initial-scale=1, minimum-scale=1, maximum-scale=5" />
     <link rel="icon" href="res/icon.png" />
     <link rel="stylesheet" href="index.css" />
 </head>