Updated OAuth website

oauth/index.html

@@ -34,8 +34,9 @@
 	<p><button id="oauth" class="button-large">Continue</button></p>
 	<noscript><h2>Please enable JavaScript or disable your ad blocker</h2></noscript>
 	<br>
-	<p><a href="https://en.wikipedia.org/wiki/OAuth" target="_blank" style="font-size: smaller;">What is OAuth?</a></p>
+	<p style="font-size: smaller;"><a href="https://en.wikipedia.org/wiki/OAuth" target="_blank">What is OAuth?</a></p>
 	<p><a href="https://github.com/M66B/open-source-email/blob/master/PRIVACY.md" target="_blank">Privacy policy</a></p>
 	<p>Copyright &copy; 2018&ndash;<span id="year">2021</span> by Marcel Bokhorst (M66B)</p>
+	<p style="font-size: smaller;">This page is <a href="https://github.com/M66B/FairEmail/blob/master/oauth/index.html" target="_blank">open source</a>.</p>
 </body>
 </html>