Update about.html

typo

Author: fiveminuteargument

sections/about.html

@@ -17,7 +17,7 @@ <h2>Play Along</h2>
           <h2>About the Code</h2>
             <p>The <a href="https://github.com/electron/electron-api-demos">source code of this app<span class="u-visible-to-screen-reader">(opens in new window)</span></a> has been organized with ease of navigation in mind.</p>
 
-            <p>Nearly all (over 90%) of <a href="http://babeljs.io/docs/learn-es2015/">ES2015<span class="u-visible-to-screen-reader">(opens in new window)</span></a> is availble to use in Electron <em>without the use of pre-processors</em> because it's a part of <a href="https://developers.google.com/v8/">V8<span class="u-visible-to-screen-reader">(opens in new window)</span></a> which is built into Electron.</p>
+            <p>Nearly all (over 90%) of <a href="http://babeljs.io/docs/learn-es2015/">ES2015<span class="u-visible-to-screen-reader">(opens in new window)</span></a> is available to use in Electron <em>without the use of pre-processors</em> because it's a part of <a href="https://developers.google.com/v8/">V8<span class="u-visible-to-screen-reader">(opens in new window)</span></a> which is built into Electron.</p>
 
             <p>To illustrate this we've made use of <code>const</code>, for un changing declarations; <code>let</code> for scoped declarations; and template strings like: <code>`Result is ${output}`</code> in the demo snippets.</p>
         </section>