fix a few things in the readme

[bpownow]

No description provided.

[googlebot]

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[bpownow]

I signed it!

[googlebot]

CLAs look good, thanks!

[dashpole]

Typo is intentional. Kustomize is a kubernetes yaml customization tool.

[dashpole]

/ok-to-test

[dashpole]

looks good other than my comment

[bpownow]

@dashpole ah ok thanks. made it a link.

[dashpole]

lgtm