docs: add Head-Control to the web UI list - #3422

warning: ignoring the client-specified setting 'log-lines', because it is a restricted setting and you are not a trusted user
warning: ignoring the client-specified setting 'netrc-file', because it is a restricted setting and you are not a trusted user
these 2 derivations will be built:
  /nix/store/l356kj75dgwdc476zndljqs3yprka3pc-headscale-a53be2d-go-modules.drv
  /nix/store/m7cfzljjmbf6kal29wn3sy9v8bj4gcrm-headscale-a53be2d.drv
headscale-a53be2d> Running phase: unpackPhase
headscale-a53be2d> unpacking source archive /nix/store/3zxmjnsfi8rd5d9hi3j3pqanhira7rw0-source
headscale-a53be2d> source root is source
headscale-a53be2d> Running phase: patchPhase
headscale-a53be2d> Running phase: updateAutotoolsGnuConfigScriptsPhase
headscale-a53be2d> Running phase: configurePhase
headscale-a53be2d> Running phase: buildPhase
headscale-a53be2d> Building subPackage ./cmd/headscale
headscale-a53be2d> buildPhase completed in 49 seconds
headscale-a53be2d> Running phase: installPhase
headscale-a53be2d> Running phase: fixupPhase
headscale-a53be2d> shrinking RPATHs of ELF executables and libraries in /nix/store/nkb13kkmi8yk8bi1sd25723akdldkv79-headscale-a53be2d
headscale-a53be2d> shrinking /nix/store/nkb13kkmi8yk8bi1sd25723akdldkv79-headscale-a53be2d/bin/headscale
headscale-a53be2d> checking for references to /build/ in /nix/store/nkb13kkmi8yk8bi1sd25723akdldkv79-headscale-a53be2d...
headscale-a53be2d> patching script interpreter paths in /nix/store/nkb13kkmi8yk8bi1sd25723akdldkv79-headscale-a53be2d
headscale-a53be2d> stripping (with command strip and flags -S -p) in  /nix/store/nkb13kkmi8yk8bi1sd25723akdldkv79-headscale-a53be2d/bin