Found some typos or sentences that could be better.
my install
RPi 3 Model B
DietPi v8.10.2 "Bullseye"
Pi-hole v5.13, FTL v5.18.2, Web Interface v5.16
https://docs.pi-hole.net/guides/vpn/wireguard/client/#key-generation
I'd like to see mention of "your first command, sudo -i will change the prompt to root@DietPi> or whatever install you have. The fourth command name="client-name" sets a variable for name. Below, on the various commands that variable will automatically be swapped out for the spot where {name} appears. You can double check this is the case with this command:
echo ${name}
this addition
"After a restart, the server file should look like:"
could read
"After a restart, the server file (wg0.conf) should look like:"
for the example code, after "After a restart, the server file should look like:", it would be nice to have something like: if you've added your second client, the server file (wg0.conf) should look like this:
and add another [Peer] with an incremented IP.
AllowedIPs = 10.100.0.3/32, fd08:4711::3/128
Likewise with the wg command, a second, incremented client.
https://docs.pi-hole.net/guides/vpn/wireguard/server/#set-your-pi-hole-to-listen-on-all-interfaces
"Settings page (tab DNS)" doesn't say anything about "listing mode" (typo for "listening mode?") There is no "Listen of all interfaces" (or a "Listen on all interfaces)
https://docs.pi-hole.net/guides/vpn/wireguard/client/#create-client-configuration
under "Next, add your server as peer for this client:"
I assume this is
nano ${name}.conf, where {name} is the name of the client you're currently working on.
then I copy/paste
[Peer]
AllowedIPs = 10.100.0.1/32, fd08:4711::1/128
Endpoint = [your public IP or domain]:47111
PersistentKeepalive = 25
and edit the [your public IP or domain]
before saving out of the file