Git clone
cd [your script dir]
git clone https://github.com/axelhahn/bashdoc.git
You get the project files includng the docs.
Wget
For pure functionality you need the file bashdoc2md.sh only.
wget https://raw.githubusercontent.com/axelhahn/bashdoc/refs/heads/main/bashdoc2md.sh
chmod 755 bashdoc2md.sh