gopherjs serve: Change language to align better in both cases.
gopherjs serve: Change language to align better in both cases.

This way it's easier to visually scan the output and see where a usable
(clickable) URL is.

bpowers/gopherjs,rasata/gopherjs,flimzy/gopherjs,albrow/gopherjs,rasata/gopherjs,Yanjing123/gopherjs,flimzy/gopherjs,nmfzone/gopherjs,gopherjs/gopherjs,gopherjs/gopherjs,flimzy/gopherjs,rasata/gopherjs,ebroder/gopherjs,ebroder/gopherjs,jargv/gopherjs,govlas/gopherjs,albrow/gopherjs,govlas/gopherjs,gopherjs/gopherjs,bpowers/gopherjs,jargv/gopherjs,Yanjing123/gopherjs,albrow/gopherjs,Archs/gopherjs,ebroder/gopherjs,Archs/gopherjs,govlas/gopherjs,gopherjs/gopherjs,bpowers/gopherjs,jargv/gopherjs,Archs/gopherjs,nmfzone/gopherjs,gopherjs/gopherjs,nmfzone/gopherjs,Yanjing123/gopherjs