Commenting fix

Author: Krounosity

src/main/java/com/thealgorithms/ciphers/AtbashCipher.java

@@ -1,3 +1,5 @@
+package com.thealgorithms.ciphers;
+
 /**
 * The Atbash cipher is a simple substitution cipher that replaces each letter
 * in the alphabet with its reverse.
@@ -9,8 +11,6 @@
 * Learn more: https://en.wikipedia.org/wiki/Atbash
 */
 
-package com.thealgorithms.ciphers;
-
 public class AtbashCipher {
 
     private String toConvert;