Readme: change APT repository URL to point to CDN

Readme.md

@@ -40,8 +40,8 @@
     - Neither Raspberry Pi OS or Microsoft package archives offer APT packages of .NET for ARM
     - You can install .NET using [my unofficial APT repository of .NET for Raspberry Pi](https://github.com/Aldaviva/RaspberryPiDotnetRepository), packaged from official Microsoft builds
         ```sh
-        sudo wget -q https://west.aldaviva.com/raspbian/aldaviva.gpg.key -O /etc/apt/trusted.gpg.d/aldaviva.gpg
-        echo "deb https://west.aldaviva.com/raspbian/ $(lsb_release -cs) main" | sudo tee /etc/apt/sources.list.d/aldaviva.list > /dev/null
+        sudo wget -q https://raspbian.aldaviva.com/aldaviva.gpg.key -O /etc/apt/trusted.gpg.d/aldaviva.gpg
+        echo "deb https://raspbian.aldaviva.com/ $(lsb_release -cs) main" | sudo tee /etc/apt/sources.list.d/aldaviva.list > /dev/null
         sudo apt update
         sudo apt install -y dotnet-runtime-latest
         ```