Review/topic f update after meeting 1 ph (#372)

* Update docs/discussion-topics/f-digital-credential-api.md

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Co-authored-by: Nikos Fotiou <nikosft@gmail.com>
Co-authored-by: duviner <59258606+duviner@users.noreply.github.com>
Co-authored-by: Paolo De Rosa <paolo.de.rosa@linux.com>

Author: 4 people