fix incorrect -profile default in docs.
fix incorrect -profile default in docs.

the default profile is 'lan', not 'local' as docs suggest.
yonglehou/serf,curtiszimmerman/serf,curtiszimmerman/serf,dalehamel/serf,hashicorp/serf,hashicorp/serf,patrickviet/serf,curtiszimmerman/serf,yonglehou/serf,mbrukman/serf,samaitra/serf,dalehamel/serf,minhkiller/serf,jmptrader/serf,dalehamel/serf,FollowMyDev/serf,mbrukman/serf,gnawhleinad/serf,mapuri/serf,patrickviet/serf,pmenglund/serf,mapuri/serf,curtiszimmerman/serf,jmptrader/serf,FollowMyDev/serf,curtiszimmerman/serf,samaitra/serf,mbrukman/serf,patrickviet/serf,mbrukman/serf,samaitra/serf,dalehamel/serf,pmenglund/serf,FollowMyDev/serf,minhkiller/serf,samaitra/serf,yonglehou/serf,mapuri/serf,gnawhleinad/serf,patrickviet/serf,jmptrader/serf,curtiszimmerman/serf,samaitra/serf,jmptrader/serf,pmenglund/serf,jmptrader/serf,FollowMyDev/serf,gnawhleinad/serf,minhkiller/serf,FollowMyDev/serf,dalehamel/serf,samaitra/serf,mbrukman/serf,mbrukman/serf,patrickviet/serf,jmptrader/serf,hashicorp/serf,hashicorp/serf,pmenglund/serf,yonglehou/serf,pmenglund/serf,minhkiller/serf,dalehamel/serf,FollowMyDev/serf,yonglehou/serf,hashicorp/serf,mapuri/serf,mapuri/serf,yonglehou/serf,gnawhleinad/serf,gnawhleinad/serf,minhkiller/serf,patrickviet/serf,gnawhleinad/serf,mapuri/serf,pmenglund/serf,minhkiller/serf