Ubuntu – “Unknown sequence editconfigs” when trying to build a kernel

I am following the instructions here: https://wiki.ubuntu.com/Kernel/BuildYourOwnKernel

I ran

apt-get source linux-image-$(uname -r)
cd linux-signed-4.15.0
chmod a+x debian/rules
chmod a+x debian/scripts/*
chmod a+x debian/scripts/misc/*
fakeroot debian/rules clean
fakeroot debian/rules editconfigs

The output of the last command is

dh editconfigs
dh: Unknown sequence editconfigs (choose from: binary binary-arch binary-indep build build-arch build-indep clean install install-arch install-indep)
debian/rules:35: recipe for target 'editconfigs' failed
make: *** [editconfigs] Error 2

My uname -r is 4.15.0-34-generic.

A possible duplicate is Enable the touchscreen of a Mediacom WinPad W700, but the answer there does not address the "Unknown sequence editconfigs" message. Do the BuildYourOwnKernel instructions need to be updated?