Update release notes with original PR numbers (#687)

Signed-off-by: gaobinlong <[email protected]>

release-notes/opensearch-notifications.release-notes-2.8.0.0.md

@@ -6,11 +6,11 @@ Compatible with OpenSearch 2.8.0
 * [AUTO] Increment version to 2.8.0-SNAPSHOT ([#657](https://github.com/opensearch-project/notifications/pull/657))
 
 ### Infrastructure
-* Upgrade gradle version to 8.1.1 ([#668](https://github.com/opensearch-project/notifications/pull/668))
+* Upgrade gradle version to 8.1.1 ([#663](https://github.com/opensearch-project/notifications/pull/663))
 * Fix gradle run failed on windows platform and fix weak password test failure ([#684](https://github.com/opensearch-project/notifications/pull/684))
 
 ### Bug Fixes
-* Modify the default values in the bindle file to make them consistent with the values in code ([#673](https://github.com/opensearch-project/notifications/pull/673))
+* Modify the default values in the bindle file to make them consistent with the values in code ([#672](https://github.com/opensearch-project/notifications/pull/672))
 
 ### Documentation
 * Add 2.8.0 release notes ([#682](https://github.com/opensearch-project/notifications/pull/682))