feat(actix): mention that middleware should be applied last (#14528)

Author: lcian

docs/platforms/rust/guides/actix-web/index.mdx

@@ -22,6 +22,7 @@ sentry = { version = "{{@inject packages.version('sentry.rust') }}", features =
 
 Initialize and configure the Sentry client. This will enable a set of default integrations, such as panic reporting.
 Then, initialize Actix Web with the Sentry middleware.
+The Sentry middleware provides correct request and trace association for any captured errors or panics, so it should be the first to process the request, that means it should be the last in your chain of `wrap` calls.
 
 <Alert level="warning">