fix typo in filename kustomization.yaml

[trent-s]

Description of the change:

Thank you team for your work and attention to this.

I simply fixed a single character typo. Documentation referred to the file kutomization.yaml. I corrected it by adding an s so that it now reads kustomization.yaml.

Motivation for the change:

Although this is a very trivial typo, I noticed it when my command failed as I had copy/pasted the incorrect file name. Fixing this will hopefully benefit others who copy/paste command names like this.

Checklist

If the pull request includes user-facing changes, extra documentation is required:

• Add a new changelog fragment in changelog/fragments (see changelog/fragments/00-template.yaml)
• Add or update relevant sections of the docs website in website/content/en/docs