Name parameter is not needed for GET credentials by SAID endpoint

[lenkan]

Similarly what was changed here: #128, the name parameter is not used for GET /identifiers/{name}/credentials/{said} endpoint. See here:

keria/src/keria/app/credentialing.py

Line 520 in 9dda515

def on_get(req, rep, name, said):

We only check that the name is a valid hab for this agent, then we proceed without using the hab. I suggest to move the endpoint to be

GET /credentials/{said}

to avoid having to pass the redundant name parameter when you have the credential id.

[m00sey]

Suggestion to remove name param

[lenkan]

Fixed by #179