feat: update Demo button with Gradio logo and new demo link

Author: mwxely

index.html

@@ -176,20 +176,9 @@ <h1 class="title is-1 vj-hero-title-cyber">
                                     </a>
                                 </span>
                                 <span class="link-block">
-                                    <a href="#" target="_blank" class="external-link button is-normal is-rounded is-dark">
+                                    <a href="https://saskatchewan-than-outdoors-profiles.trycloudflare.com/" target="_blank" class="external-link button is-normal is-rounded is-dark">
                                         <span class="icon">
-                                            <svg viewBox="-3.5 -3.5 7 7" width="1.5em" height="1.5em" style="vertical-align: -0.2em;">
-                                                <g transform="rotate(90)" stroke="#367DBD" fill="none" stroke-linecap="round" stroke-linejoin="round">
-                                                    <circle cx="0" cy="0" r="2.9" stroke-width="0.55"/>
-                                                    <circle cx="-1.1" cy="1.0" r="0.55" stroke-width="0.48"/>
-                                                    <circle cx="-1.1" cy="-1.0" r="0.55" stroke-width="0.48"/>
-                                                    <line x1="-1.1" y1="0.42" x2="0" y2="0" stroke-width="0.48"/>
-                                                    <line x1="-1.1" y1="-0.42" x2="0" y2="0" stroke-width="0.48"/>
-                                                    <line x1="0" y1="0" x2="1.6" y2="1.05" stroke-width="0.48"/>
-                                                    <line x1="0" y1="0" x2="1.6" y2="-1.05" stroke-width="0.48"/>
-                                                    <circle cx="0" cy="0" r="0.18" fill="#367DBD"/>
-                                                </g>
-                                            </svg>
+                                            <img src="static/images/gradio.png" alt="Gradio" style="width: 1.2em; height: 1.2em; vertical-align: -0.15em;">
                                         </span>
                                         <span>Demo</span>
                                     </a>