Fixed nginx example
Fixed nginx example

server_name names is not a comma separated list host hostsnames.
oittaa/acme-tiny,Trim/acme-dns-tiny,appuio/acme-tiny,appuio/acme-tiny,oittaa/acme-tiny,rspeed/acme-simple,corokada/acme-tiny,corokada/acme-tiny,appuio/acme-tiny,diafygi/acme-tiny