chore: update tips

assets/gradio_description_animate_clear.md

@@ -1,3 +1,3 @@
 <div style="font-size: 1.2em; text-align: center;">
-    Step 3: click the <strong>🚀 Animate</strong> button below to generate, or click 🧹 Clear to erase the results
+    Step 3: Click the <strong>🚀 Animate</strong> button below to generate, or click 🧹 Clear to erase the results
 </div>

assets/gradio_description_upload.md

@@ -21,7 +21,7 @@
             Step 2: Upload a <strong>Driving Video</strong> (1:1 aspect ratio) ⬇️
         </div>
         <div style="display: inline-block; font-size: 0.8em;">
-            Tips: Focus on the head, minimize shoulder movement, <strong>neutral expression</strong> in first frame.
+            <strong>Tips:</strong> Focus on the head, minimize shoulder movement, <strong>neutral expression</strong> in first frame.
         </div>
     </div>
 </div>