Another typo fix in 2024/README.md

Rebuilt index.html.

2024/index.html

@@ -666,7 +666,7 @@ full-fledged C64 emulator is included!</p>
 <li><a href="ferguson2/index.html">2024/ferguson2</a></li>
 </ul>
 <p>The “<strong>Prize in yil-tas</strong>” provides a hint as to what this marvelous
-winning entry is going, provided that you are someone familiar in at
+winning entry is doing, provided that you are someone familiar in at
 least 3 languages (<strong>hint</strong>: One of them is C, another is English).</p>
 <p>The IOCCC is honored to present this entry for your enjoyment and for you to
 ponder the <a href="https://github.com/ioccc-src/winner/blob/master/2024/ferguson2/prog.c">prog.c source code</a>.</p>