Update health check docs
Update health check docs

dplarson/gitlabhq,t-zuehlsdorff/gitlabhq,dplarson/gitlabhq,t-zuehlsdorff/gitlabhq,dplarson/gitlabhq,jirutka/gitlabhq,jirutka/gitlabhq,stoplightio/gitlabhq,iiet/iiet-git,axilleas/gitlabhq,dreampet/gitlab,iiet/iiet-git,mmkassem/gitlabhq,dreampet/gitlab,jirutka/gitlabhq,axilleas/gitlabhq,stoplightio/gitlabhq,stoplightio/gitlabhq,jirutka/gitlabhq,axilleas/gitlabhq,dreampet/gitlab,dreampet/gitlab,iiet/iiet-git,t-zuehlsdorff/gitlabhq,mmkassem/gitlabhq,stoplightio/gitlabhq,axilleas/gitlabhq,iiet/iiet-git,t-zuehlsdorff/gitlabhq,mmkassem/gitlabhq,mmkassem/gitlabhq,dplarson/gitlabhq