I don't know much about WSL, but the instructions for this do not look right. Isn't WSL usually just a Linux distribution, so you should also use the package manager?
If you just run ./configure && make && sudo make install, sudo will be installed to /usr/local as prefix. Doesn't this mean the unpatched binary at /usr/bin/sudoedit will still be accessible?
If you just run ./configure && make && sudo make install, sudo will be installed to /usr/local as prefix. Doesn't this mean the unpatched binary at /usr/bin/sudoedit will still be accessible?