fix one more about link

src/index.html

@@ -175,7 +175,7 @@ <h1>Keyboard Shortcuts</h1>
 			<p>Welcome to <strong>PlainReader</strong>, a minimal web-based RSS client for <a href="http://www.newsblur.com">NewsBlur</a>.</p>
 		</header>
 		<section class="content">
-			<p>Try it out in <a href="" class="cancel">demo mode</a>, <span class='gear icon'></span> <a href="" class="login_link">log in with your NewsBlur account</a>, or <a href="https://github.com/lhagan/PlainReader" target="_blank">contribute</a> on GitHub. <small><a href="/about" class="cancel">More info...</a></small></p>
+			<p>Try it out in <a href="" class="cancel">demo mode</a>, <span class='gear icon'></span> <a href="" class="login_link">log in with your NewsBlur account</a>, or <a href="https://github.com/lhagan/PlainReader" target="_blank">contribute</a> on GitHub. <small><a href="/about/" class="cancel">More info...</a></small></p>
 		</section>
 		<section class="appintro warning">
 			<p><strong>Warning</strong>: You're using an unsupported browser or device. PlainReader is designed to work on the latest WebKit-based desktop browsers, such as Chrome and Safari, and iPad running iOS 5+.</p>