feat: Add Minikube install docs

[afbjorklund]

What does this PR do?

Adds installation instructions for the "minikube" extension, not in featured list

Screenshot/screencast of this PR

What issues does this PR fix or reference?

• Add minikube provider for choosing CRI-O container runtime #2610

How to test this PR?

cd website
yarn start

http://localhost:3000/docs/kubernetes/minikube

[afbjorklund]

Apparently running the format check in "website" doesn't check anything ?

$ prettier --check "{extensions,packages,tests,types}/**/*.{ts,svelte}" "extensions/*/scripts/build.js" "website/**/*.{md,js}" "website/src/**/*.{css,tsx}"

$ prettier --check 'src/**/*.{css,ts,tsx}'

Missing the **/*.{md,js}

[benoitf]

@afbjorklund lint:fix in root directory and format:fix

Maybe we need to setup a precommit task