Update groff.md
Update groff.md
deekim/tldr,cptdeka10/tldr,cptdeka10/tldr,felixonmars/tldr,felixonmars/tldr,felixonmars/tldr,slash3b/tldr,slash3b/tldr,deekim/tldr,slash3b/tldr,cptdeka10/tldr,deekim/tldr