First, fix https:// address.
Secondly, previous formatting would display on the page as one line
altogether, which couldn't be pasted into a terminal correctly.
Before running `kubeadm init` users should be informed that the command might change depending on the network plugins they choose. It is better to provide it before presenting with `kubeadm init` so that they don't have to tear the cluster apart once they figure out they needed some extra parameters while running the command
* Container Linux doc fixes
portions of the URLs were missing their bash substitutions and the variable exports don't apply to the following commands without using 'export'
* Adjustments from PR
export is not needed, used proper bash expansion
* typos