Add note to backlog for real-time certificate alerts

[AnnabelJoe]

Category: Backlog

Description: Add note to backlog for real-time certificate alerts.

Note: recreated without labels after earlier label errors.

[GdAyo19]

@GdAyo19 has applied to work on this issue as part of the Stellar Wave Program's 6th wave.

I would love to work on this project

ℹ️ Repo Maintainers: To accept this application, review their application or assign @GdAyo19 to this issue.