Fix formatting issue in config docs.
Fix formatting issue in config docs.

The floating paragraph seems to need additional indentation to work correctly on the markdown parser middle man uses - GitHub got it right before in the preview but the website broke dumping the new config option inline.
youhong316/consul,calgaryscientific/consul,calgaryscientific/consul,calgaryscientific/consul,scalp42/consul,kingland/consul,42wim/consul,scalp42/consul,42wim/consul,42wim/consul,calgaryscientific/consul,42wim/consul,vamage/consul,kingland/consul,vamage/consul,42wim/consul,kingland/consul,youhong316/consul,youhong316/consul,hashicorp/consul,scalp42/consul,calgaryscientific/consul,youhong316/consul,scalp42/consul,youhong316/consul,hashicorp/consul,vamage/consul,hashicorp/consul,kingland/consul,vamage/consul,kingland/consul,vamage/consul,scalp42/consul,hashicorp/consul