Demos: ensure 720px wide, reduce indentation

orx-marching-squares/src/jvmDemo/kotlin/FindContours01.kt

@@ -3,21 +3,19 @@ import org.openrndr.color.ColorRGBa
 import org.openrndr.extra.marchingsquares.findContours
 import org.openrndr.math.Vector2
 
-fun main() {
-    application {
-        configure {
-            width = 720
-            height = 720
-        }
-        program {
-            extend {
-                drawer.clear(ColorRGBa.BLACK)
-                drawer.stroke = ColorRGBa.PINK
-                fun f(v: Vector2) = v.distanceTo(drawer.bounds.center) - 200.0
-                val contours = findContours(::f, drawer.bounds, 16.0)
-                drawer.fill = null
-                drawer.contours(contours)
-            }
+fun main() = application {
+    configure {
+        width = 720
+        height = 720
+    }
+    program {
+        extend {
+            drawer.clear(ColorRGBa.BLACK)
+            drawer.stroke = ColorRGBa.PINK
+            fun f(v: Vector2) = v.distanceTo(drawer.bounds.center) - 200.0
+            val contours = findContours(::f, drawer.bounds, 16.0)
+            drawer.fill = null
+            drawer.contours(contours)
         }
     }
-}
+}