Fix formatting

Author: GreyCat

src/main/java/io/kaitai/struct/KaitaiStream.java

@@ -656,7 +656,7 @@ public ValidationNotAnyOfError(Object actual, KaitaiStream io, String srcPath) {
     public static class ValidationExprError extends ValidationFailedError {
         public ValidationExprError(Object actual, KaitaiStream io, String srcPath) {
             super("not matching the expression, got " + actual, io, srcPath);
-}
+        }
 
         protected Object actual;
     }