tools/finish: don't quote path with space (#14058) [backport]
tools/finish: don't quote path with space (#14058) [backport]

Path with spaces should be added as is, quoting them makes utilities
treat the quotes as part of the path. This makes `nim` unable to be used
from the command line even if it appears to be added to user's Path
environment variable.

Even more confusing, Windows 10's PATH editor shows the path without any
quotes, you only see them when you use "Edit text". Took me a good 15
minutes to figure out why couldn't I run `nim` despite it being in Path.
dom96/Nim,dom96/Nim,dom96/Nim,dom96/Nim,dom96/Nim,dom96/Nim,dom96/Nim