[RFR] fix underscore not visible in some resolution across gitlab

What does this MR do?

Underscore in file name not visible across gitlab in chrome

Resolution 1920x1080

Chrome Version: 78.0.3904.97

OS: Ubuntu 18.04.03

Current Screen Resolution: 1920x1080 Zomm 100%

More description is available on following issue #36337 (closed)

Screenshots

Does this MR meet the acceptance criteria?

Yes

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

It requires cross browser testing

• Review and add/update tests for this feature/bug. Consider all test levels. See the Test Planning Process.
• Tested in all supported browsers