Update find-the-k-th-character-in-string-game-i.cpp

Author: kamyu104

C++/find-the-k-th-character-in-string-game-i.cpp

@@ -5,6 +5,6 @@
 class Solution {
 public:
     char kthCharacter(int k) {
-        return 'a' + __builtin_popcount(k - 1);
+        return 'a' + __builtin_popcount(k - 1) % 26;
     }
 };