Include permission requirements in Vault entity merge API docs

[mstott2]

Ensure that the permission requirements are captured in the Vault entity merge API documentation

Please go to the Preview tab and select the appropriate template:

• Boundary
• Consul
• HCP services
• Nomad

Terraform

• HCP Terraform
• Terraform
• Terraform Enterprise

[hashicorp-cla-app]

All committers have signed the CLA.

[hashicorp-cla-app]

Thank you for your submission! We require that all contributors sign our Contributor License Agreement ("CLA") before we can accept the contribution. Read and sign the agreement

Learn more about why HashiCorp requires a CLA and what the CLA includes

---

mstott2 seems not to be a GitHub user.
You need a GitHub account to be able to sign the CLA.
If you have already a GitHub account, please add the email address used for this commit to your account.

_{Have you signed the CLA already but the status is still pending? Recheck it.}

[github-actions]

Vercel Previews Deployed

Name	Status	Preview	Updated (UTC)
Dev Portal	✅ Ready (Inspect)	Visit Preview	Thu May 7 14:30:51 UTC 2026
Unified Docs API	✅ Ready (Inspect)	Visit Preview	Thu May 7 14:26:47 UTC 2026

[github-actions]

Broken Link Checker

This PR contains broken links, but won't be blocked. Use this report to improve content quality:

Quick Actions

• Internal links (HashiCorp sites): Please fix these - they impact user experience
• External links: Consider if these are essential or can be updated/removed
• Temporary issues: External sites may recover - check again before merging

Need Help?

• Review our Broken Link Monitoring docs
• Check the monthly production report for context

---

Internal Links

Full Github Actions output

External Links

Summary

Status	Count
🔍 Total	5
✅ Successful	0
⏳ Timeouts	0
🔀 Redirected	0
👻 Excluded	5
❓ Unknown	0
🚫 Errors	0
⛔ Unsupported	0

Full Github Actions output