Fix typos, broken links, and formatting

[ricardoapl]

What type of PR is this?

/kind documentation

What this PR does / why we need it:

Found a couple of typos, broken links, and formatting errors

Which issue(s) this PR fixes:

Fixes #14 Fixes #15

Special notes for your reviewer:

None

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[k8s-ci-robot]

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[ricardoapl]

/assign @lauralorenz

[lauralorenz]

/lgtm /approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: lauralorenz, ricardoapl

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