Add warning + link to report issues

README.md

@@ -11,6 +11,11 @@ pinned: false
   <span style="font-weight: 600;">Want to try out the dev mode on Hugging Face Spaces?</span> Use the "Request to join this org" button to join the waitlist.
 </div>
 
+<div style="background-color: rgb(255, 241, 209); color: rgb(90, 65, 0); border-radius: 8px; padding: 0.5rem 1rem; margin-bottom: 2rem; ">
+  <span style="font-weight: 600;">WARNING:</span> This feature is still in an <span style="font-weight: 600;">alpha stage</span>.
+  You should expect bugs and instabilities.
+  If you encounter issues with Spaces dev mode, please report them in the <a href="/spaces/dev-mode-explorers/README/discussions/new">Community tab</a> of this Organization card 🤗
+</div>
 
 # Spaces Dev Mode (feature preview)