[Openid-specs-ab] session_selection_required v. account_selection_required

[Mike Schwartz]

In the IANA OAuth Extensions Error Registry, the name 
"session_selection_required" is registered:
http://www.iana.org/assignments/oauth-parameters/oauth-parameters.xhtml#extensions-error

However, in the current OpenID Connect Core spec, I see 
"account_selection_required" is used.

Does the IANA registry need to be updated?

- Mike S