spaces in Tor's systemd unit file causes issues

https://gitweb.torproject.org/tor.git/tree/contrib/dist/tor.service.in is currently using spaces.

I recommend not doing this. Causes issues. Info on the issue...

deb-systemd-helper fails to enable systemd units when using 'WantedBy = ' with spaces: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=786418

More reasoning why this is syntactically incorrect: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=786421