[Docs] aura conf --gen > ~/.config/aura/config.toml fails because ~/.config/aura/ directory doesn't exist in the first place #864

A minor suggestion:

The docs and the README mention the following command to generate a config file:

However, this command will fail since ~/.config/aura directory doesn't exist (unless the user already used aura in the past and kept the directory for some reason):

% aura conf --gen > ~/.config/aura/config.toml
zsh: no such file or directory: /home/xfzv/.config/aura/config.toml

% aura conf --gen > ~/.config/aura/config.toml
bash: /home/xfzv/.config/aura/config.toml: No such file or directory

Maybe the directory creation could be automated? Or at least

mkdir -p ~/.config/aura

should be added to the documentation?

Keep up the good work!