checking lint issue

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

Author: JeevaRamanathan

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

@@ -80,4 +80,4 @@ public static boolean isIsogramByLength(String str) {
         }
         return uniqueChars.size() == str.length();
     }
- }
+}