Update governance.md
Update governance.md

adding divs

Former-commit-id: 1dd09f6ccb300dd1f8c885ed96e15684c1175748 [formerly 174f8ef3dc28f45067c57da2bceb1ad3692e3e40]
Former-commit-id: 5d8857e9f394009b3c890ba6763d00661b0faef4
LibraryCarpentry/librarycarpentry.github.io,LibraryCarpentry/librarycarpentry.github.io,LibraryCarpentry/librarycarpentry.github.io