Fix new parameter name in breaking changes docs (#3038) (#3040)

(cherry picked from commit 6bfbdaf)

Co-authored-by: Quentin Pradet <[email protected]>

Author: github-actions[bot]

docs/release-notes/breaking-changes.md

@@ -28,7 +28,7 @@ For more information, check [PR #2840](https://github.com/elastic/elasticsearch-
  * `host_info_callback` is now `sniffed_node_callback`
  * `sniffer_timeout` is now `min_delay_between_sniffing`
  * `sniff_on_connection_fail` is now `sniff_on_node_failure`
- * `maxsize` is now `connection_per_node`
+ * `maxsize` is now `connections_per_node`
 ::::
 
 ::::{dropdown} Remove deprecated url_prefix and use_ssl host keys
@@ -50,4 +50,4 @@ Elasticsearch 9 removed the kNN search and Unfreeze index APIs.
 **Action**<br>
  * The kNN search API has been replaced by the `knn` option in the search API since Elasticsearch 8.4.
  * The Unfreeze index API was deprecated in Elasticsearch 7.14 and has been removed in Elasticsearch 9.
- ::::
+ ::::