📖 docs: fix typos and docs formatting improvements

[Kausheel]

What this PR does:

The commit includes minor typo fixes and removing a duplicate link. I've tested the changes with make serve-book.

This is my first time contributing to cluster-api, so I'm working on making some small changes to get comfortable with the repository + process before starting on more meaningful contributions.

Thanks!

[k8s-ci-robot]

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[k8s-ci-robot]

Hi @Kausheel. Thanks for your PR.

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[Kausheel]

/area documentation

[stmcginnis]

/ok-to-test
/lgtm

[k8s-ci-robot]

LGTM label has been added.

Details

Git tree hash: 013cb33ada99d025a98840ec82136fba52ad89a7

[sbueringer]

Thx!

/lgtm
/approve

/cherry-pick release-1.12

[k8s-infra-cherrypick-robot]

@sbueringer: once the present PR merges, I will cherry-pick it on top of release-1.12 in a new PR and assign it to you.

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In response to this:

Thx!

/lgtm
/approve

/cherry-pick release-1.12

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[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: sbueringer

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[k8s-infra-cherrypick-robot]

@sbueringer: new pull request created: #13197

Details

In response to this:

Thx!

/lgtm
/approve

/cherry-pick release-1.12

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes-sigs/prow repository.