📖 add links to CAPI e2e deep dive sessions

[chrischdi]

What this PR does / why we need it:

Adds video links for the CAPI e2e deep dive sessions to the book, so they are easier to find.

Which issue(s) this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close the issue(s) when PR gets merged):
Fixes #

/area documentation

[sbueringer]

Thx!

/lgtm
/approve

Please approve my PR for link fixes 😀

[k8s-ci-robot]

LGTM label has been added.

Git tree hash: f5b16d9e2475b15dcee5fdddb6663b0d3bfb5258

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: sbueringer

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[chrischdi]

/cherry-pick release-1.11

[k8s-infra-cherrypick-robot]

@chrischdi: once the present PR merges, I will cherry-pick it on top of release-1.11 in a new PR and assign it to you.

In response to this:

/cherry-pick release-1.11

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.

[sbueringer]

Triggered re-run of the action. Not sure if it will work without rebase

[k8s-infra-cherrypick-robot]

@chrischdi: new pull request created: #12839

In response to this:

/cherry-pick release-1.11

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.