Update _professor_dashboard.html.haml
Update _professor_dashboard.html.haml

Add comma
mkoon/gradecraft-development,UM-USElab/gradecraft-development,UM-USElab/gradecraft-development,UM-USElab/gradecraft-development,UM-USElab/gradecraft-development,peterkshultz/gradecraft-development,peterkshultz/gradecraft-development,peterkshultz/gradecraft-development,mkoon/gradecraft-development,mkoon/gradecraft-development