Fix Edit this page link to use main branch

[nasa9084]

What this PR does / why we need it:

The "Edit this page" link on the top-right of the document page is broken because mkdocs uses master branch link as default but this repository uses main branch as default

ref: https://www.mkdocs.org/user-guide/configuration/#edit_uri

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation only

Which issue/s this PR fixes

fixes #8087

How Has This Been Tested?

make live-docs then check by browser

Checklist:

• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I've read the CONTRIBUTION guide
• I have added tests to cover my changes.
• All new and existing tests passed.

[k8s-ci-robot]

@nasa9084: This issue is currently awaiting triage.

If Ingress contributors determines this is a relevant issue, they will accept it by applying the triage/accepted label and provide further guidance.

The triage/accepted label can be added by org members by writing /triage accepted in a comment.

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/test-infra repository.

[nasa9084]

/kind documentation
/assign @ElvinEfendi

[tao12345666333]

Thanks!

/ok-to-test
/approve

[tao12345666333]

/lgtm

[rikatz]

/approve
Tks

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: nasa9084, rikatz, tao12345666333

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• OWNERS [rikatz]

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