Fix: rename receiver name
Fix: rename receiver name

Receiver name `bs` should be consistent with previous receiver name `s` for Service.
go-kit/kit,martinbaillie/kit,basvanbeek/kit,nicot/kit,nicot/kit,xmattstrongx/kit,go-kit/kit,anarcher/kit,anarcher/kit,martinbaillie/kit,basvanbeek/kit,xmattstrongx/kit