Update overlap-custom-side.html

Author: answerquest

overlap-custom-side.html

@@ -64,7 +64,7 @@
 <small><p>Left side: <input type="text" id="leftOverlay" size="40" value="http://mapwarper.net/maps/tile/26003/{z}/{x}/{y}.png"> </p><p>Right side: <input type="text" id="rightOverlay" size="40" value="http://mapwarper.net/maps/tile/25970/{z}/{x}/{y}.png"></p>
 <a href="https://github.com/answerquest/answerquest.github.io/blob/master/overlap-custom-side.html">Source code</a> | <a href="http://datameet.org">Datameet</a>
 <br>
-By <a href="https://nikhilvj.co.in">Nikhil VJ</a> | <a href="javascript:alert('Loved this? Please help me do more open source work like this!\nTip jar: UPI: 9665831250@upi');">i appreciate this!</a>
+By <a href="https://nikhilvj.co.in" target="_blank">Nikhil VJ</a> | <a href="https://nikhilvj.co.in/contribute/" target="_blank">i appreciate this!</a>
 </small>
 </div>
 <div id="left">Left</div>