Update CHANGELOG.md

Co-authored-by: Andrea Selva <[email protected]>

Author: yaauie

CHANGELOG.md

@@ -1,5 +1,5 @@
 ## 10.7.3
- - Fixed an issue where a single over-size event being rejected by Elasticsearch would cause the entire entire batch to be retried indefinitely. The oversize event will still be retried on its own and logging has been improved to include payload sizes in this situation [#972](https://github.com/logstash-plugins/logstash-output-elasticsearch/pull/972)
+ - Fixed an issue where a single over-size event being rejected by Elasticsearch would cause the entire batch to be retried indefinitely. The oversize event will still be retried on its own and logging has been improved to include payload sizes in this situation [#972](https://github.com/logstash-plugins/logstash-output-elasticsearch/pull/972)
 
 ## 10.7.2
  - [DOC] Fixed links to restructured Logstash-to-cloud docs [#975](https://github.com/logstash-plugins/logstash-output-elasticsearch/pull/975)