Link to unrelated domain in 5.0 release notes (expressjs.org instead of .com)

[gterras]

https://github.com/expressjs/express/releases/tag/v5.0.0

The first link Express v5 release blog post should be https://expressjs.com/2024/09/12/v5-release.

[bjohansebas]

cc: @UlisesGascon

[UlisesGascon]

Thanks for reporting it @gterras! I just updated the url ;)