Update sponsored events page with grant policy link and contact info#823

kjaymiller wants to merge 2 commits intogh-pagesBlackPythonDevs/blackpythondevs.github.io:gh-pagesfrom

issue-809-event-grants-infoBlackPythonDevs/blackpythondevs.github.io:issue-809-event-grants-infoCopy head branch name to clipboard