Fix problème permissions gradlew

src/main/java/view/FirefighterGrid.java

@@ -12,6 +12,7 @@ public class FirefighterGrid extends Canvas implements Grid<ViewElement>{
     private void paintElementAtPosition(ViewElement element, Position position) {
         paintBox(position.x(), position.y(), element.getColor());
     }
+
     private int boxWidth;
     private int boxHeight;
     private int columnCount;