Update Wiki for Debian 9

[tdmadam]

Please update the wiki for Debian 9 to make installation easier.
Here are the changes tested on two fresh installations of Debian 9 DVD

Log in as 'su' as sudo users are not yet active
apt update && apt upgrade

Install the missing packages on a fresh installation of Debian 9 (debian-9.13.0-amd64-DVD-1)
apt install sudo apt-transport-https curl

Add 'username' to the sudo group
usermod -aG sudo username

Reboot for changes to take effect

Update to aspnetcore-runtime-6.0
Add missing symbolic link to /usr/local/bin/dotnet

sudo mv microsoft.asc.gpg /etc/apt/trusted.gpg.d/
wget -q https://packages.microsoft.com/config/debian/9/prod.list
sudo mv prod.list /etc/apt/sources.list.d/microsoft-prod.list
sudo chown root:root /etc/apt/trusted.gpg.d/microsoft.asc.gpg
sudo chown root:root /etc/apt/sources.list.d/microsoft-prod.list
sudo apt-get update
sudo apt-get install aspnetcore-runtime-6.0
sudo ln -s /usr/bin/dotnet /usr/local/bin/dotnet

Update to GPONMonitor-1.0.11.zip

sudo mkdir -p /var/www_aspnetcore/GPONMonitor
cd /var/www_aspnetcore
curl -sSL -o GPONMonitor-1.0.11.zip https://github.com/bartekkois/GPONMonitor/releases/download/1.0.11/GPONMonitor-1.0.11.zip
sudo unzip GPONMonitor-1.0.11.zip -d /var/www_aspnetcore/GPONMonitor

[bartekkois]

I`ve updated the installation proces described in Wiki to Debian 11.