spelling fix

Co-authored-by: Carson Ip <[email protected]>

dev_docs/RELEASES.md

@@ -74,7 +74,7 @@ For patch releases, only the version on the existing major and minor version bra
 
 * Merge the PRs created by the GitHub workflow ran as part of the steps in the ["Day after feature freeze"](#day-after-feature-freeze) section. 
  > [!IMPORTANT]
- > Only merge the PRs once pinged n Slack by the Release Manager on release date in the #mission-control channel
+ > Only merge the PRs once pinged on Slack by the Release Manager on release date in the #mission-control channel
 
 ## When compatibility between Agents & Server changes