Update values keys in integrations/secrets

[vpipkt]

What

Fix documentation about using Azure KeyVault for secret manager

How

reference the key in the latest helm charts (e.g. workload-launcher), tried in my own helm release

Review guide

User Impact

Quicker onboarding of Azure KeyVault for secrets management

Can this PR be safely reverted and rolled back?

• YES 💚
• NO ❌

[vercel]

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