Add missing package to debian installation

[Nurmagoz]

In this instruction:

https://wahay.org/documentation/getting-started/installation/#debian-and-ubuntu

it only recommend to install curl, but later we find this command:

echo deb https://dl.autonomia.digital/debian $(lsb_release -c | cut -f 2) main | sudo tee /etc/apt/sources.list.d/wahay.list

This wont work as well, because lsb-release and apt-transport-https packages are not installed by default. (in debian similar to curl)

So to fix this in the first command we should add:

sudo apt install curl lsb-release apt-transport-https