[DOCS] register the CycloneDX Property Taxonomy Top-Level Namespace you are using

[jkowalleck]

Hi there,

I've learned that https://github.com/ksoclabs/kbom was moved here.
Previously, the tool used the CycloneDX property taxonomy Top-Level namespace ksoc - which was registered here https://github.com/CycloneDX/cyclonedx-property-taxonomy (and got de-documented via CycloneDX/cyclonedx-property-taxonomy#112)

I've seen that this tool uses a different Top-Level namespace rad, now.
I'd recommend registering this Top-Level namespace via https://github.com/CycloneDX/cyclonedx-property-taxonomy/issues/new/choose