git: febba4622b60 - main - CONTRIBUTING.md: add author identity info

The branch main has been updated by emaste:

URL: https://cgit.FreeBSD.org/src/commit/?id=febba4622b605bfda0f44ae3c943ccdaa914cdeb

commit febba4622b605bfda0f44ae3c943ccdaa914cdeb
Author:     Ed Maste <emaste@FreeBSD.org>
AuthorDate: 2023-09-19 14:12:03 +0000
Commit:     Ed Maste <emaste@FreeBSD.org>
CommitDate: 2023-09-20 23:28:28 +0000

    CONTRIBUTING.md: add author identity info
    
    We do not want @users.noreply.github.com addresses.
    
    Reviewed by:    imp
    Sponsored by:   The FreeBSD Foundation
    Differential Revision: https://reviews.freebsd.org/D41918
---
 CONTRIBUTING.md | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 90c2a4bfab39..62a11d8498c3 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -75,6 +75,13 @@ submission does not meet the limited scope for pull requests accepted
 here. Sometimes it is easier to review a GitHub pull request than to do the
 review in Phabricator, so that's also allowed.
 
+### Author Name and Email
+
+We require that contributions are associated with a unique identity.
+The author email address should not be `<something>@users.noreply.github.com`.
+Do note that your name and email address will become a permanent and immutable
+part of the public Git history of the FreeBSD source tree.
+
 ## Style
 
 Avoid adding trailing newlines and whitespace. These slow down the integration