git: 873c13f9f7f0 - main - CONTRIBUTING.md: Suggest PR and Differential Revision lines

The branch main has been updated by imp:

URL: https://cgit.FreeBSD.org/src/commit/?id=873c13f9f7f0145644ba78de38ed403f0a2005df

commit 873c13f9f7f0145644ba78de38ed403f0a2005df
Author:     Warner Losh <imp@FreeBSD.org>
AuthorDate: 2023-02-28 00:19:25 +0000
Commit:     Warner Losh <imp@FreeBSD.org>
CommitDate: 2023-02-28 00:19:25 +0000

    CONTRIBUTING.md: Suggest PR and Differential Revision lines
    
    When there's an open PR and/or a Differential Revision, people
    evaluating the pull request will want to look at them. Suggest that the
    submitter include this information to make it easier to process.
    
    Sponsored by:           Netflix
---
 CONTRIBUTING.md | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 45f058dfd1d3..f5ae3e8fccc9 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -30,6 +30,8 @@ A pull request will be considered if:
 * Commits should include one or more `Signed-off-by:` lines with full name and email address certifying https://developercertificate.org/[Developer Certificate of Origin].
 * The commits follow FreeBSD's style guide. See [Style](#Style).
 * The commits should not introduce trailing white space.
+* If the commmit fixes a bug, please add 'PR: <bugnumber>' to the comment message.
+* If there's a code review in phabricator, please include a link as a 'Differential Revision: ' line.
 
 When updating your pull request, please rebase with a forced push rather than a
 merge commit.