Update bridge-to-kubernetes-vs.md

[ProfessorMc]

Azure/Bridge-To-Kubernetes#621 removed the todo app an moved it to a custom fork for dependabot. Updated the link to the fork.

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[ShannonLeavitt]

@ghogen

IMPORTANT: When the changes are ready for publication, add a #sign-off comment to signal that the PR is ready for the review team to merge.

#label:"aq-pr-triaged"
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[ghogen]

@ProfessorMc @qpetraroia
I don't think we should referencing any private forks from the documentation. Can you explain the reasoning here, also I've added a Bridge product team member for review.