contributor-guide: submit-changes: clarify example with Yocto bug ID

The example could be understood as the content of the commit message
once the editor (git config core.editor) opens, where the first
line is the actual commit title and not the commit description.

This example would make the Fixes line the commit title, which is not
what we want.

In short, according to my understanding of git-commit(1):

The following is a git commit message:

"""
git commit title

git commit description
"""

Reported-by: Barne Carstensen <barne.carstensen@danfoss.com>
(From yocto-docs rev: a5862406bf3230befe9db9f2539bbbc86c02015d)

Signed-off-by: Quentin Schulz <quentin.schulz@cherry.de>
Signed-off-by: Antonin Godard <antonin.godard@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 2 insertions, 0 deletions

diff --git a/documentation/contributor-guide/submit-changes.rst b/documentation/contributor-guide/submit-changes.rst
index e1215a5550..35da2dbc70 100644
--- a/documentation/contributor-guide/submit-changes.rst
+++ b/documentation/contributor-guide/submit-changes.rst
@@ -198,6 +198,8 @@ to add the upgraded version.
       description. Be sure to use the actual bug-tracking ID from
       Bugzilla for bug-id::
 
+         single-line summary of change
+
          Fixes [YOCTO #bug-id]
 
          detailed description of change