Add a video of the dashboard to the readme

Author: MelbourneDeveloper

docs/designs/screenshot.png

@@ -4,7 +4,7 @@
 
 **Agentic ICD coding powered by patient encounters, clinical notes, and semantic search**
 
-<video src="https://dataprovider.tech/assets/images/cc.mp4" autoplay loop muted playsinline width="100%"></video>
+[![Watch the demo](docs/designs/screenshot.png)](https://dataprovider.tech/assets/images/cc.mp4)
 
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