Fix content_fields.html.twig override

[adriendupuis]

Question	Answer
JIRA Ticket
Versions
Edition

Checklist

• [ ] Text renders correctly
• [ ] Text has been checked with vale
• [ ] Description metadata is up to date
• [ ] Redirects cover removed/moved pages
• [ ] Code samples are working
• [ ] PHP code samples have been fixed with PHP CS fixer
• [ ] Added link to this PR in relevant JIRA ticket or code PR

[github-actions[bot]]

Preview of modified files

Preview of modified Markdown:

• docs/content_management/field_types/form_and_template.md