Feature/add clarification basis ressources ptdata 733

[f-peverali]

Description

Motivation and Context

PTDATA-733 wird hier nur teilweise gelöst. Der Fokus der Änderung liegt auf Datenobjekt.md (https://github.com/gematik/spec-ISiK-Vitalparameter-und-Koerpermasze/pull/137/files#diff-02b61106ebff770967bcc1b664a7e0e9e4e0262a91341a918e679d674ca6974a)

Types of changes

• [x] New feature (non-breaking change which adds functionality)
• [x] Breaking change (fix or feature that would cause existing functionality to not work as expected)?

Checklist:

• [ ] My code follows the code style of this IG / specification.
• [ ] My change requires a change to the documentation or narrative (intend) of the IG.
• [ ] I have already updated the documentation / narrative (intend) accordingly.

[ylboerner]

@f-peverali Hier sind ein paar Markdown Links kaputt gegangen durch search and replace. Lass uns diese erst fixen vor der richtigen Review 👍