fix for outputDir

[chibat]

The specified outputDir does not work partially.

$ deno install --unstable -A -f -n aleph https://deno.land/x/aleph/cli.ts
$ aleph --version
aleph.js 0.3.0-alpha.28
deno 1.8.3
v8 9.0.257.3
typescript 4.2.2
$ aleph init hello
$ cd hello

$ echo '
import type { Config } from "https://deno.land/x/[email protected]/types.ts"

export default (): Config => ({
  outputDir: "/docs"  
})
' > aleph.config.ts

$ aleph build
$ ls dist
_aleph  logo.svg
$ ls docs
404.html  _aleph  index.html

I expect the following:

$ ls dist
ls: cannot access 'dist': No such file or directory
$ ls docs
404.html  _aleph  index.html  logo.svg

I fixed it.
I would appreciate it if you could check it.

[ije]

nice! thanks @chibat