fix: typo in codechef userid (#151)

Author: Percobain

index.html

@@ -3596,7 +3596,7 @@ <h6>Committee Head</h6>
                   <h6><a href="https://amandeep-singh.xyz" target="_blank">amandeep-singh.xyz</a></h6>
                   <h6><a href="https://github.com/amandeeep02" target="_blank">GitHub: @amandeeep02</a>
                   </h6>
-                  <h6><a href="https://www.codechef.com/users/amandeep02" target="_blank">Codechef: @amandeep02</a></h6>
+                  <h6><a href="https://www.codechef.com/users/amandeeep02" target="_blank">Codechef: @amandeeep02</a></h6>
                   <h6><a href="https://codeforces.com/profile/NotJinxed" target="_blank">CodeForces:
                       @NotJinxed</a></h6>
                   <div class="actions">