chore: fix some typo in icon demo

examples/example-icons.html

@@ -130,8 +130,8 @@ <h1>
   <a href="/examples/index.html" target="_blank" style="text-decoration: none; font-size: 28px">&#x2302;</a>
 </h1>
 <h3 style="font-style: italic; color: #373737">
-All SVG icons came from the <a href="https://pictogrammers.com/library/mdi/" target="_blank">Material Design Icons</a> project, we only picked the minimum icons needed by SlickGrid.
-<br>The instruction is to simply import the "slick-icons.css" file and then use any of the CSS class "sgi sgi-icon-name" as shown below (<b>Note</b>: the "sgi" class is also required).
+All SVG icons came from the <a href="https://pictogrammers.com/library/mdi/" target="_blank">Material Design Icons</a> project, we only picked the minimum icons required by SlickGrid.
+<br>The instruction is to simply import the "slick-icons.css" file and then use any of the CSS classes as shown below by using "sgi sgi-icon-name" (<b>Note</b>: the "sgi" class is also required).
 </h3>
 
 <!-- icon flex box container -->
@@ -144,8 +144,8 @@ <h2>Icon extra utils <span style="color: #838383">(available sizes, from 10px to
 </div>
 
 <!-- icon extra utils -->
-<h2>Icons are pure CSS (credits goes to UnoCSS project, see this <a href="https://antfu.me/posts/icons-in-pure-css" target="_blank">article</a>)</h2>
-<h3>You can use regular CSS to change the color of your icons and make them scalable</h3>
+<h2>Pure CSS icons (credits goes to UnoCSS project, see this <a href="https://antfu.me/posts/icons-in-pure-css" target="_blank">article</a>)</h2>
+<h3>You can then use any regular CSS to change the color of your icons and even make them scalable</h3>
 <div class="box box-3">
 </div>
 </body>