roles/council-advisor: Add examples of responsibilities, add email alias
    
    This commit fills in several commented out sections in this page doc, to
    provide better documentation of what the Fedora D&I Advisor actually
    does in the day-to-day. Specific changes outlined below:
    
    * Add example tickets, blogs, and other content for responsibilities to
      Fedora Council and Fedora D&I Team
    * Add an explanation/note about specific examples of responsibilities to
      the Fedora Community
    * Add monitoring and/or responding to mail sent to the Diversity email
      alias as a specific responsibility to the Fedora Community
    
    Signed-off-by: Justin W. Flory (he/him) [Fedora Project] <jwf@fedoraproject.org>