fix github API URLs
fix github API URLs

yuvipanda/mwoauthenticator,maltevogl/oauthenticator,jupyterhub/oauthenticator,jupyter/oauthenticator,minrk/oauthenticator,jupyter/oauthenticator,NickolausDS/oauthenticator,enolfc/oauthenticator,yuvipanda/mwoauthenticator