Changelog validation should fail if the PR reference for any entry is written in incorrect format or markdown link syntax

[MajorLift]

Example

  ### Changed

  - Update UI export from MATIC to POL ([#4720](https://github.com/MetaMask/core/pull/4720))
- - Bump `@metamask/profile-sync-controller` from `^0.8.0` to `^0.8.1` ([#4722]https://github.com/MetaMask/core/pull/4720)
+ - Bump `@metamask/profile-sync-controller` from `^0.8.0` to `^0.8.1` ([#4722](https://github.com/MetaMask/core/pull/4720))

https://github.com/MetaMask/core/blame/4b76d4e8c07d833dae7d2d1cc4b19c1da1f6218b/packages/notification-services-controller/CHANGELOG.md#L15

Related

• See also Add a way to verify that each changelog entry has an associated PR #150

[desi]

Closing and we will do the additional linked issues instead.