Update docs/reference/api-conventions.asciidoc

Co-authored-by: David Turner <[email protected]>

docs/reference/api-conventions.asciidoc

@@ -307,8 +307,7 @@ Accept: application/vnd.elasticsearch+json; compatible-with=7
 === `TOO_MANY_REQUESTS (429)` status code push back
 
 All {es} APIs may respond with the HTTP `429 Too Many Requests` status code, indicating that the cluster is too busy right now to
-handle the request. When this happens, you should consider to retry the operation after a short delay, preferably
-with randomized exponential back-off.
+handle the request. When this happens, consider retrying after a short delay. If the retry also receives a `429 Too Many Requests` response, extend the delay by backing off exponentially before each subsequent retry.
 
 [discrete]
 [[api-url-access-control]]