nitpick: link change codechef

Author: ashwera

index.html

@@ -3859,8 +3859,8 @@ <h6>Tech Team</h6>
                 <div class="details">
                   <h6><a href="https://github.com/ashwera" target="_blank">GitHub: 
                     @ashwera</a></h6>
-                  <h6><a href="https://www.codechef.com/users/ashwera" target="_blank">Codechef: 
-                    @ashwera</a></h6>
+                  <h6><a href="https://www.codechef.com/users/ashwerah" target="_blank">Codechef: 
+                    @ashwerah</a></h6>
                   <h6><a href="https://leetcode.com/u/ashwera/" target="_blank">LeetCode:
                       @ashwera</a>
                   </h6>