Update Potato.java

Improved condiment list.

src/main/java/Potato.java

@@ -13,7 +13,7 @@ public class Potato implements Tuber {
   }
 
   public boolean prepare() {
-    this.addCondiments("sour cream", "chives", "butter");
+    this.addCondiments("sour cream", "chives", "butter", "crumbled bacon", "grated cheese");
     return this.isDelicious();
   }