chore: Fix spacing for details.go goimports warning

What does this MR do?

Fixes spacing to make goimports happy. It's also just more correct so regardless of the failure the change makes sense

See recently main failure https://gitlab.com/gitlab-org/security-products/analyzers/report/-/pipelines/804639859, presumably due to the v1.19 version bump this is now failing with goimports@latest but not go lint

What are the relevant issue numbers?

N/A

Does this MR meet the acceptance criteria?

• Changelog entry added
• Conforms to the code review guidelines
• Conforms to the Go guidelines
• Security reports checked/validated by reviewer