[Improvement] AI-SBOM-Guide Section 3.2 Competence

[OliverFendt]

Describe the improvement

In the bullet point list about the Program participants

Legal

is missing in my opinion

[matthewhjcrawford]

Change section 2.7

any organization employee or contractor that defines, contributes to or has responsibility for preparing, reviewing or approving supplied software

Note: Depending on the organization, that may include (but is not limited to) software developers, release engineers, quality engineers, product marketing, legal and product management.

[shanecoughlan]

Due to potential availability constraints on my end, I have merged the pull request into the main document here, and it can be changed later if needed:
https://github.com/OpenChain-Project/Reference-Material/blob/master/AI-SBOM-Compliance/en/Artificial-Intelligence-System-Bill-of-Materials-Compliance-Management-Guide.md