Apply suggestions from code review

Co-authored-by: Michał Olender <[email protected]>

Author: jirimoravcik

sources/platform/actors/development/programming_interface/actor_standby.md

@@ -74,8 +74,15 @@ inputs and outputs in your README.
 
 ### Readiness probe
 
-Before Actor standby runs are ready to serve requests, Apify platform checks if the web server is ready via a readiness probe.
-The platform sends a GET request to the path `/` with a header `x-apify-container-server-readiness-probe`. If the header is present in the request, you can perform an early return with a simple response to prevent wasting resources. Note that you have to return a response, otherwise the Actor run will never be ready and therefore won't be able to process any requests.
+Before Actor standby runs are ready to serve requests, the Apify platform checks the web server's readiness using a readiness probe.
+The platform sends a GET request to the path `/` with a header `x-apify-container-server-readiness-probe`. If the header is present in the request, you can perform an early return with a simple response to prevent wasting resources.
+
+:::note Return a response
+
+You must return a response; otherwise, the Actor run will never be marked as ready and won't process requests.
+
+:::
+
 
 See example code below that distinguishes between "normal" and "readiness probe" requests.