chore: Message API improvements (#2396)

Co-authored-by: Pranav Raj S <pranav@chatwoot.com>

app/views/api/v1/models/_agent_bot.json.jbuilder

@@ -1,5 +1,5 @@
 json.id resource.id
 json.name resource.name
 json.description resource.description
-json.outgoing_url resource.name
+json.outgoing_url resource.outgoing_url
 json.account_id resource.account_id