Update propose.md
Update propose.md

Former-commit-id: 60d9358ad2664fdcbe382451da03b6adff5710ea
joelaha/devopsdays-web,joelaha/devopsdays-web,benjohnson77/devopsdays-web,joelaha/devopsdays-web,masteinhauser/devopsdays-web,masteinhauser/devopsdays-web,masteinhauser/devopsdays-web,benjohnson77/devopsdays-web,joelaha/devopsdays-web,benjohnson77/devopsdays-web,benjohnson77/devopsdays-web,masteinhauser/devopsdays-web