docs: Update integrations.mdx

Author: igorlukanin

docs/pages/product/monitoring/integrations.mdx

@@ -69,7 +69,8 @@ export][self-sinks-for-metrics].
 
 Additionally, create a [`vector.toml` configuration file][vector-docs-config]
 next to your `cube.js` file. This file is used to keep sinks configuration. You
-have to commit this file for Vector configuration to take effect.
+have to commit this file to the main branch of your deployment for Vector
+configuration to take effect.
 
 ### Environment variables