fix script run on Ubuntu 18.04 with nano 2.9

[meteoritt]

inflating: nanorc-2.9/zsh.nanorc linking: nanorc-2.9/zshrc.nanorc -> zsh.nanorc finishing deferred symbolic links: nanorc-2.9/gitcommit.nanorc -> git.nanorc nanorc-2.9/html.j2.nanorc -> html.nanorc nanorc-2.9/zshrc.nanorc -> zsh.nanorc

• mv 'nanorc-v2.9/' ./ mv: cannot stat 'nanorc-v2.9/': No such file or directory
• rm -rf nanorc-v2.9
• rm /tmp/nanorc.zip
• '[' ']'
• _update_nanorc
• touch /c/Users/home/.nanorc install.sh: line 20: /c/Users/home/.nano/nanorc: No such file or directory

[scopatz]

Thanks!