update formatting
update formatting

since you can't see bold after markdown on the homepage, I used an unordered sub-list to list and link event pages.
Cryptoparty-Ann-Arbor/Cryptoparty-Ann-Arbor.github.io,Cryptoparty-Ann-Arbor/Cryptoparty-Ann-Arbor.github.io,Cryptoparty-Ann-Arbor/Cryptoparty-Ann-Arbor.github.io