Make things easier to remind. Same rule for commit and PR.

CONTRIBUTING.md

@@ -42,28 +42,19 @@ Please don't edit the ChangeLog file. A project manager will update it from your
 Use clear commit messages with the following structure:
 
 <pre>
-KEYWORD Short description (may be the bug number #456)
+FIXED|Fixed #456 Short description (where #456 is number of bug fix, if it exists. In upper case to appear into ChangeLog)
+or
+CLOSED|Closed #456 Short description (where #456 is number feature request, if it exists. In upper case to appear into ChangeLog)
+or
+NEW|New Short description (In upper case to appear into ChangeLog)
+or
+Short description (when the commit is not introducing feature or closing a bug)
 
 Long description (Can span accross multiple lines).
 </pre>
 
-Where KEYWORD is one of:
-
-- "Fixed" for bug fixes (May be followed by the bug number i.e: #456)
-- "Closed" for a commit to close a feature request issue (May be followed by the bug number i.e: #456)
-- void, don't put a keyword if the commit is not introducing feature or closing a bug.
-
 ### Pull Requests
-When submitting a pull request, use following syntax:
-
-<pre>
-KEYWORD Short description (may be the bug number #456)
-</pre>
-
-Where KEYWORD is one of:
-
-- "FIXED" or "Fixed" for bug fixes. In upper case to appear into ChangeLog. (May be followed by the bug number i.e: #456)
-- "NEW" or "New" for new features. In upper case to appear into ChangeLog. (May be followed by the task number i.e: #123)
+When submitting a pull request, use same rule than Commits. With upper case keyword to appear into ChangeLog.
 
 
 ### Resources