docs: added details about health route (#3861)

docs/content/development/backend/install.mdx

@@ -75,6 +75,10 @@ After these three steps and in only a couple of minutes, you now have a complete
 curl localhost:9000/store/products
 ```
 
+### Health Route
+
+You can access `/health` to get health status of your backend.
+
 ---
 
 ## Next Steps