linter fix

Signed-off-by: JeevaRamanathan <jeevaramanathan.m@infosys.com>

Author: JeevaRamanathan

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

@@ -26,7 +26,6 @@
  * Reference from https://en.wikipedia.org/wiki/Heterogram_(literature)#Isograms
  */
 public class Isogram {
-    
     /**
      * Private constructor to prevent instantiation of utility class.
      */