sudo: use `shutdown -h` to halt rather than reboot (#1191)
sudo: use `shutdown -h` to halt rather than reboot (#1191)

Makes the example consistent with its description
zoisom/tldr,slash3b/tldr,slash3b/tldr,katekyan/tldr,deekim/tldr,UncommonPleb/tldr,zoisom/tldr,slash3b/tldr,UncommonPleb/tldr,deekim/tldr,Phizho/tldr,katekyan/tldr,UncommonPleb/tldr,Phizho/tldr,felixonmars/tldr,katekyan/tldr,cptdeka10/tldr,Phizho/tldr,zoisom/tldr,felixonmars/tldr,deekim/tldr,felixonmars/tldr,cptdeka10/tldr,cptdeka10/tldr