email aliases: Refactor/add several Fedora Council email addresses
    
    This commit refactors/updates several of the Fedora Council email
    aliases used in the Fedora Council docs and also across the project.
    Summary of changes:
    
    * Update fcaic@fp.o from @bex to @riecatnor
    * Add fpgm@fp.o to @bcotton (somehow there was not one already?)
    * Add diversity@fp.o to @jflory7, @mattdm, @riecatnor
    * Fix broken docs links in comments
    
    This will also give me a point-of-contact address to link on the
    Diversity Advisor docs page, which was my original intent in proposing
    these changes:
    
    https://docs.fedoraproject.org/en-US/council/diversity-advisor/#contact
    
    Signed-off-by: Justin W. Flory <git@jwf.io>