recover the string "Sat" that was accidentally deleted

Author: koron

2024/index.html

@@ -41,7 +41,7 @@ <h1 class="text-start">
               VimConf 2024<br />
             </h1>
             <h3 class="text-start">
-              <span class="font-italic">2024-11-23 () 09:30 ~ 19:30</span>
+              <span class="font-italic">2024-11-23 (Sat) 09:30 ~ 19:30</span>
             </h3>
             <p class="lead text-start">VimConf is an international conference about Vim, the editor.</p>
           </div>