Update description for functions and argument name to enable golint

What does this MR do?

Updates the description for functions and some argument names to avoid golint violations and then to enable golint. With !15 (merged) (namely %11.6), the lint_code with golint has been not effective at all due to Go modules.

What are the relevant issue numbers?

gitlab-org/gitlab#208580 (closed)

Does this MR meet the acceptance criteria?

• [n/a] Changelog entry added
• [n/a] Documentation created/updated for GitLab EE, if necessary
• Documentation created/updated for this project, if necessary
• [n/a] Documentation reviewed by technical writer or follow-up review issue created
• [n/a] Tests added for this feature/bug
• [n/a] Job definition updated, if necessary
  • [n/a] Auto-DevOps template
  • [n/a] Job definition example
  • [n/a] CI Templates
• Conforms to the code review guidelines
• Conforms to the Go guidelines
• [n/a] Security reports checked/validated by reviewer