Update charts.html.haml
What does this MR do?
Fixes #296853 (closed).
Screenshots (strongly suggested)
Left: master, Right: after this MR
Does this MR meet the acceptance criteria?
Conformity
- Changelog entry
- Documentation (if required)
- Code review guidelines
- Merge request performance guidelines
- Style guides
- Database guides
- Separation of EE specific content
Availability and Testing
No risk is posed.