[llvm] [CI] Add mention of LLVM Developer Policy in email-check message (NFC) (PR #143300)

[Baranov Victor via llvm-commits]

https://github.com/vbvictor created https://github.com/llvm/llvm-project/pull/143300

As for now, It may be hard for people to get truth from long Discourse discussion, so a link to official document may be enough to convince changing email from private to public.

>From 9ac1e04001acc4aa69d61eb334dec51ebbd2a80c Mon Sep 17 00:00:00 2001
From: Victor Baranov <bar.victor.2002 at gmail.com>
Date: Sun, 8 Jun 2025 08:36:02 +0300
Subject: [PATCH] [CI] Add mention of LLVM Developer Policy in email-check
 message

---
 .github/workflows/email-check.yaml | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/.github/workflows/email-check.yaml b/.github/workflows/email-check.yaml
index f4481d5cf5583..904ad718f97dd 100644
--- a/.github/workflows/email-check.yaml
+++ b/.github/workflows/email-check.yaml
@@ -32,7 +32,8 @@ jobs:
           COMMENT: >-
             ⚠️ We detected that you are using a GitHub private e-mail address to contribute to the repo.<br/>
             Please turn off [Keep my email addresses private](https://github.com/settings/emails) setting in your account.<br/>
-            See [LLVM Discourse](https://discourse.llvm.org/t/hidden-emails-on-github-should-we-do-something-about-it) for more information.
+            See [LLVM Developer Policy](https://llvm.org/docs/DeveloperPolicy.html#email-addresses) and
+            [LLVM Discourse](https://discourse.llvm.org/t/hidden-emails-on-github-should-we-do-something-about-it) for more information.
         run: |
           cat << EOF > comments
           [{"body" : "$COMMENT"}]