add pizza example.

app.py

@@ -140,6 +140,7 @@ examples = [
     ["house.png", "How could someone get out of the house?"],
     ["flower.jpg", "Question: What is this flower and where is it's origin? Answer:"],
     ["forbidden_city.webp", "In what dynasties was this place built?"],
+    ["pizza.jpg", "What are the ingredients of it?"],
 ]
 
 with gr.Blocks(