[Openid-specs-ab] Issue #1763: Clarify use of presentation_submission (openid/connect)

[tlodderstedt]

New issue 1763: Clarify use of presentation_submission
https://bitbucket.org/openid/connect/issues/1763/clarify-use-of-presentation_submission

Torsten Lodderstedt:

The text currently only mentions the way a vp\_token can be provided to the verifier, it does not mention that a presentation\_submission must always be provided along the vp\_token. Additions to the text to clarify are needed.