Change CLI tool reference in docs

[Jino-T]

Description

On the "External Tools: Universal Importer & DefectDojo-CLI (Pro)" docs page, universal importer code blocks still reference "defectdojo-cli". Those references were changed to "universal-importer." Changes were tested using hugo.

[sc-11468]

[dryrunsecurity[bot]]

No security concerns detected in this pull request.

---

All finding details can be found in the DryRun Security Dashboard.