improve cheatsheet

Author: luizbills

public/about.html

@@ -208,7 +208,7 @@ <h1>LITECANVAS</h1>
 
       <h2>Hello World</h2>
 
-      <p>Create a text file named <code>index.html</code> and open it your browser.</p>
+      <p>Create a text file named <code>index.html</code>, put the code below and open it your browser.</p>
       <pre><code class="language-html" data-copy="pos-absolute size-bg">&lt;!DOCTYPE html&gt;
 &lt;html&gt;
   &lt;body&gt;

public/sw.js

@@ -1,5 +1,5 @@
 const cacheName = "luizbills.litecanvas-editor-v1";
-const version = "2.50.1";
+const version = "2.50.2";
 
 const precacheResources = [
   "/",