move groundLevel up a bit

GitOrigin-RevId: 45af011ee0

Jumpy.Shared/Player.cs

@@ -17,7 +17,7 @@ namespace Jumpy {
     private Texture2D texture;
 
     // TODO: stop assuming 1920x1080.
-    private const int groundLevel = 1080 - spriteSize / 2;
+    private const int groundLevel = 1080 - spriteSize / 2 - 200;
     private Vector2 position = new Vector2(200, groundLevel);
     private Facing facing = Facing.Right;
     private Pose pose = Pose.Standing;