Fixes and issue initializing webhook notification ``` FATA[0000] Initializing object layer failed cause=Unable to initialize event \ notification. dial tcp: missing port in address requestb.in source=[server-main.go:448:serverMain()] ```
Add a new config entry moving to version 13. ``` "webhook": { "1": { "enable": true, "address": "http://requestb.in/1i9al7m1" } } ```