.local TLD warning: increase severity, add link
.local TLD warning: increase severity, add link

This adds a link to https://github.com/rancher/rancher/issues/9322 and changes "not recommended" to "strongly discouraged", as well as makes mention of some of the issues that may arise when `.local` addresses are being used. See the linked issue for the full discussion.

(Sorry for the incredibly long line; I am not sure I can insert line breaks here so I'm just tagging along with the existing code style in the file.)
lvuch/ui,lvuch/ui,rancherio/ui,vincent99/ui,rancher/ui,westlywright/ui,westlywright/ui,rancher/ui,vincent99/ui,rancherio/ui,vincent99/ui,rancherio/ui,westlywright/ui,rancher/ui,lvuch/ui