docs: Update team name to Diversity, Equity, & Inclusion Team
    
    This commit updates the Pagure README, Fedora documentation, and other
    miscellaneous files in the repository to reflect our new team name. We
    added "Equity" into the team name to better reflect the focus and
    intended impact of our work. This was discussed in team meetings and
    Pagure tickets before finalizing.
    
    Closes #206.
    
    Signed-off-by: Justin W. Flory (he/him) [Fedora Project] <jwf@fedoraproject.org>