fix(style): missing footnotes styles for Kramdown
fix(style): missing footnotes styles for Kramdown

hjiang/1byte.io,leancloud/leancloud.rocks,leancloud/leancloud.rocks,hjiang/1byte.io,sparanoid/almace-scaffolding,sparanoid/almace-scaffolding,sszuflita/almace-scaffolding,sszuflita/almace-scaffolding,hjiang/1byte.io,sszuflita/almace-scaffolding,sparanoid/almace-scaffolding,leancloud/leancloud.rocks