add commit details in CHANGELOG.md file

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

Author: akhilesh-ksolves

CHANGELOG.md

@@ -2109,3 +2109,6 @@ Initial version to have a stable reference before [gossip protocol removal](docs
 - Bucket commands.
 - Downsampling support for UI.
 - Grafana dashboards for Thanos components.
+
+### Added
+- [#8602](https://github.com/thanos-io/thanos/pull/8602) Add Add Ksolves Thanos Support url in Home Page under Support and Training section.