docs(council): Incorporate edits from Operations Architect onboarding
    
    This commit introduces changes discussed by @mattdm, @jflory7, and
    @amoloney during the on-boarding hackfest for the Fedora Operations
    Architect role. This reflects the final version of the role page and the
    Council charter with the new role introduced.
    
    Signed-off-by: Justin W. Flory (he/him) <jwf@redhat.com>