Refactored ReverseStringUsingStack utility for reversing strings using stack

Author: navaneedan07

src/main/java/com/thealgorithms/strings/ReverseString.java

@@ -85,4 +85,5 @@ public static String reverse4(String str) {
         }
         return reversedString.toString();
     }
-}
+}
+// --- IGNORE ---