Clarify outline reference in README

[CyberWarBaby]

What type of PR is this?
/kind documentation

What this PR does / why we need it:
Clarifies wording in the README: changes "content to videos" -> "content for videos" for clarity.

Which issue(s) this PR fixes:
Fixes #

Special notes for your reviewer:
NONE

Does this PR introduce a user-facing change?:
NONE

NONE

Additional documentation e.g., KEPs (Kubernetes Enhancement Proposals), usage docs, etc.:

NONE

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: CyberWarBaby
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[linux-foundation-easycla]

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• ✅ login: CyberWarBaby / name: Jimoh Habeeblahi Adesola (fbaba65)

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