add space between ci text and commit sha in Merge Request widget

What does this MR do?

add space between 'for' and commit SHA

Are there points in the code the reviewer needs to double check?

I don't love that text spacing is using padding, maybe better to remove flex from .ci_widget and style it some other way

Why was this MR needed?

Screenshots (if relevant)

Does this MR meet the acceptance criteria?

• Changelog entry added
• Documentation created/updated
• API support added
• Tests
  • Added for this feature/bug
  • All builds are passing
• Conform by the merge request performance guides
• Conform by the style guides
• Branch has no merge conflicts with master (if it does - rebase it please)
• Squashed related commits together

What are the relevant issue numbers?

Closes #27986 (closed)