Add X to my name (#769)

Co-authored-by: Sacha Sultan <sachasultan@MacBook-Air-de-Sacha.local>

Author: sachasultan0-hash

students.txt

@@ -84,7 +84,7 @@ Söhnchen	Vincent  X
 Soro	Nangounon Mohamed   X  
 Storp	Anais X    
 Sudhir	Anirudh Karat  X   
-Sultan	Sacha     
+Sultan	Sacha    X    
 Tejodonkeng Menkem	Luc     X
 Thevaraja	Akilan     X
 Trancart	Nicolas