Update Journal refs page

[naushinthomson]

• [x] Add info about journal-bracket-check, article-title-case, messages

Definition of done

• [x] Add changelog to page
• [x] Assign Fred to update the Schematron if relevant

[naushinthomson]

@FAtherden-eLife I'm not sure if the schematron has already been updated to include links to these two tests but in case it hasn't!