I would like to add install instructions for RHEL8 to the fd documentation

[ethsol]

This issue is just to have an issue number to refer.

Get the latest fd-v*-x86_64-unknown-linux-gnu.tar.gz file from sharkdp on github

tar xf fd-v*-x86_64-unknown-linux-gnu.tar.gz
chown -R root:root fd-v*-x86_64-unknown-linux-gnu
cd fd-v*-x86_64-unknown-linux-gnu
sudo cp fd /bin
gzip fd.1
chown root:root fd.1.gz
sudo cp fd.1.gz /usr/share/man/man1
sudo cp autocomplete/fd.bash /usr/share/bash-completion/completions/fd
source /usr/share/bash-completion/completions/fd
fd