Change: Replace ref to VTs category with better fitting scan config one

[cfi-gb]

What

See commit title

Why / Rationales

• NASL is not C so you can't introduce any memory leaks or similar
• Any memory issue needs to be either fixed on scanner side (e.g. memory leaks, better memory management, ...) or solved via changes to the scan config (by e.g. the ones outlined in the parts above or by limit the concurrent scanned hosts and similar)
• Pointing users to the vulnerability tests category won't help as these things can't be fixed/solved on VT side

References

None

[cfi-gb]

@greenbone/docs-maintainers Please review (the failure seems to be unrelated to the content of this PR), thanks.

[cfi-gb]

@greenbone/docs-maintainers ping