docs: Fix cockpit installation guide #147

Job	Run time
General Pull Request Checks / Run Cargo Udeps	8m 25s
General Pull Request Checks / Run Clippy	3m 37s
General Pull Request Checks / Run Cargo Deny (advisories)	40s
General Pull Request Checks / Run Cargo Deny (bans licenses sources)	40s
General Pull Request Checks / Run Rustfmt	11s
General Pull Request Checks / Run RustDoc	4m 28s
General Pull Request Checks / Run Cargo Tests	4m 16s
Reviewdog Pull Request Checks / actionlint	21s
Reviewdog Pull Request Checks / eslint	28s
Reviewdog Pull Request Checks / flake8	8s
Reviewdog Pull Request Checks / markdownlint	13s
Reviewdog Pull Request Checks / shellcheck	5s
Reviewdog Pull Request Checks / yamllint	14s
General Pull Request Checks / All tests passed	1s
Helm Chart Check	26s
Publish Docker Image	13m 59s
	38m 12s

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