- Add `Reported by`, `Tested by`, `Fixes`, `MFH`.
- Mention that `Submitted by` is typically not used with git.
- Add more cases to `Approved by`.
- Move `Sponsored by:` to the same place it appears in the template.
Reviewed by: debdrup
Approved by: debdrup
Sponsored by: The FreeBSD Foundation
Differential Revision: https://reviews.freebsd.org/D28905