ci: do not treat message parts as xml

Signed-off-by: Anas Nashif <anas.nashif@intel.com>
diff --git a/scripts/gitlint/zephyr_commit_rules.py b/scripts/gitlint/zephyr_commit_rules.py
index dfeb35e..cded9e6 100644
--- a/scripts/gitlint/zephyr_commit_rules.py
+++ b/scripts/gitlint/zephyr_commit_rules.py
@@ -76,7 +76,7 @@
     def validate(self, title, _commit):
         regex = self.options['regex'].value
         pattern = re.compile(regex, re.UNICODE)
-        violation_message = "Title does not follow <subsystem>: <subject>"
+        violation_message = "Title does not follow [subsystem]: [subject]"
         if not pattern.search(title):
             return [RuleViolation(self.id, violation_message, title)]