refactor: Use single quotes consistently in the files

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What does this MR do and why?

While reviewing another MR, I stumbled across the following files that redundantly and inconsistently use %q(...) and %{ ... } in the file.

Although the GitLab codebase does not prefer the the usage of a particular syntax for string literals (see here), it is important to keep the codebase consistent within a certain file. single as part of

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MR acceptance checklist

Please evaluate this MR against the MR acceptance checklist. It helps you analyze changes to reduce risks in quality, performance, reliability, security, and maintainability.

MR Checklist (@gerardo-navarro)

• Changelog entry added, if necessary
• Documentation created/updated via this MR
• Documentation reviewed by technical writer or follow-up review issue created
• Tests added for this feature/bug
• Tested in all supported browsers
• Conforms to the code review guidelines
• Conforms to the merge request performance guidelines
• Conforms to the style guides
• Conforms to the javascript style guides
• Conforms to the database guides

Screenshots or screen recordings

Only syntactic changes.

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