Changed the warning

Author: qbzzt

pages/stack/interop/tutorials/message-passing.mdx

@@ -95,9 +95,7 @@ For development purposes, we'll first use autorelay mode to handle message execu
 
 
     <Callout type="warning" emoji="⚠️">
-        Do *not* attempt to run these steps with the [devnet](../tools/devnet).
-        At this point we are relying on the autorelay functionality of Supersim.
-        The devnet does not have this, you have to send the executing message yourself, as explained [here](#implement-manual-message-relaying).
+    If you attempt to run these steps with the [devnet](../tools/devnet), you *must* Send the executing message yourself, as explained [here](#implement-manual-message-relaying).
     </Callout>
 
   1.  In the directory where Supersim is installed, start it with autorelay.