Improve _config.yml
Improve _config.yml

- Properly indent values
- Add missing comments
AladdinSonni/ratchet,Artea/ratchet,calvintychan/ratchet,asonni/ratchet,jamesrom/ratchet,youzaiyouzai666/ratchet,kujian/web-frame,tranc99/ratchet,AndBicScadMedia/ratchet,artemave/ratchet,Diaosir/ratchet,kujian/web-frame,leplatrem/ratchet,arnoo/ratchet,ctkjose/ratchet-1,liangxiaojuan/ratchet,isathish/ratchet,coderstudy/ratchet,Joozo/ratchet,Holism/ratchet,guohuadeng/ratchet,mazong1123/ratchet-pro,mbowie5/playground2,twbs/ratchet,hashg/ratchet,mazong1123/ratchet-pro,kkirsche/ratchet,coliff/ratchet,kujian/web-frame,jackyzonewen/ratchet,aisakeniudun/ratchet,zipscene/ratchet,youprofit/ratchet,wallynm/ratchet,jimjin/ratchet,vebin/ratchet,Samda/ratchet,cslgjiangjinjian/ratchet,twbs/ratchet