Update lint failure messages

This template is ONLY used for enhancement requests. Bug reporting or new feature request issues should use the other template options for issue submission.

Current Behavior

The lint stage's error messages are not formatted well for the GitLab job log. There are also references to Jenkins that should be removed.

Purpose

Readability of job logs and clarification that Jenkins is no longer used by CHT.

Plan

Review add/modifying line breaks in error messages. Confirm error messages no longer reference Jenkins and update to GitLab where appropriate.

Acceptance Criteria

Lint error message lines fit the width of the GitLab log. Error messages no longer reference Jenkins.