✅ [Story interactive] Rename Example Image Quiz and Poll Stories to Use .amp.html Extension (ampproject#35511)

* Rename examples to use .amp.html extension

* Remove confetti from results

Author: Brandons42

examples/amp-story/interactive_img_polls.html examples/amp-story/interactive_img_polls.amp.html

@@ -765,16 +765,12 @@ <h1>Image Polls</h1>
             id="results-component"
             prompt-text="You are a"
             option-1-image="https://images.unsplash.com/photo-1577416026704-0fe2d48a0f20?ixid=MnwxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8&ixlib=rb-1.2.1&auto=format&fit=crop&w=1500&q=80"
-            option-1-confetti="🌲"
             option-1-results-category="Lake lover"
             option-2-image="https://images.unsplash.com/photo-1506970845246-18f21d533b20?ixid=MnwxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8&ixlib=rb-1.2.1&auto=format&fit=crop&w=1500&q=80"
-            option-2-confetti="🏙️"
             option-2-results-category="City-goer"
             option-3-image="https://images.unsplash.com/photo-1559494007-9f5847c49d94?ixid=MnwxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8&ixlib=rb-1.2.1&auto=format&fit=crop&w=668&q=80"
-            option-3-confetti="🏝️"
             option-3-results-category="Tropical explorer"
             option-4-image="https://images.unsplash.com/photo-1516302350523-4c29d47b89e0?ixid=MnwxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8&ixlib=rb-1.2.1&auto=format&fit=crop&w=1500&q=80"
-            option-4-confetti="🏞️"
             option-4-results-category="National Park lover"
           >
           </amp-story-interactive-results>