Fix: stop repeatedly reloading when holding down R, change to detect …

…only once

src/HammeredGame/HammeredGame/HammeredGame.cs

@@ -182,7 +182,7 @@ protected override void Update(GameTime gameTime)
             // Check for exit input
             if (input.BACK_DOWN || input.KeyDown(Keys.Escape)) Exit();
 
-            if (input.ButtonPress(Buttons.Y) || input.KeyDown(Keys.R))
+            if (input.ButtonPress(Buttons.Y) || input.KeyPress(Keys.R))
             {
                 InitializeLevel(testObstaclesCombo);
             }