Fix printing of current directory in wrapper script

[fendor]

Noticed with current hie-bios:

$ hie-bios debug A.hs
Root directory:      /home/munin/Documents/haskell/hie-bios/tests/projects/space stack
Component directory: /home/munin/Documents/haskell/hie-bios/tests/projects/space
Dependencies:        stackproj.cabal package.yaml stack.yaml

Notice the root and component directory. This needs an additional test.

Seems to be our first unix exclusive bug 🎊