Fix pipewire installation guide

[simongapp]

Current status

In https://github.com/kebag-logic/pipewire/blob/milan-avb-dev/src/modules/module-avb/doc/INSTALL.md#install-linuxptp it says

Then modify the file located at ~/linuxptp/configs/gPTP.conf. The parameter to change is the priority1 to 247 as diplayed below:

but gPTP.conf does not exist. The filename is gPTP.cfg.

Goal

Change the filename

[simongapp]

Running this step on my fresh machine:

sudo pacman -S base \
    base-devel \
    bash-completion \
    btrfs-progs \
    clang \
    cmake \
    dolphin \
    efibootmgr \
    ethtool \
    git \
    glib2-devel \
    gnome-console \
    gnu-netcat \
    htop \
    less \
    linux-firmware \
    ltrace \
    meson \
    networkmanager \
    numactl \
    openssh \
    openvpn \
    qpwgraph \
    sddm \
    sshfs \
    strace \
    tmux \
    tree \
    unzip \
    vim \
    wireshark-cli \
    zram-generator

results in
error: target not found: gnu-netcat
related: https://gitlab.archlinux.org/archlinux/packaging/packages/gnu-netcat/-/issues/1

Solution:
pacman offers openbsd-netcat

[simongapp]

Step 9

Enable the window manager (sddm is assumed)
sudo systemctl enable ssdm

results in: Failed to enable unit: Unit ssdm.service does not exist.

If this is about sddm, then it is a duplicate of step 6.

[simongapp]

The install instruction tie the repository to branch milan-avb-dev only which is not even the latest branch.