docs: include one infra layer requirement

[lennessyy]

Describe the Change

This PR adds the requirement that all content bundles only have one infra layer.

Changed Pages

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Jira Tickets

🎫 PE-5678

Backports

Can this PR be backported?

• Yes. Remember to add the relevant backport labels to your PR.
• No. Please leave a short comment below about why this PR cannot be backported.

[netlify]

✅ Deploy Preview for docs-spectrocloud ready!

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[vault-token-factory-spectrocloud]

💔 Some backports could not be created

Status	Branch	Result
❌	version-4-0	Backport failed because of merge conflicts
❌	version-3-4	Backport failed because of merge conflicts
❌	version-4-1	Backport failed because of merge conflicts You might need to backport the following PRs to version-4-1: - docs: add note about vddk secret namespace (#4713)
❌	version-4-2	Backport failed because of merge conflicts You might need to backport the following PRs to version-4-2: - docs: add note about vddk secret namespace (#4713)
❌	version-4-3	Backport failed because of merge conflicts
❌	version-4-4	Backport failed because of merge conflicts
✅	version-4-5

Note: Successful backport PRs will be merged automatically after passing CI.

Manual backport

To create the backport manually run:

backport --pr 4888

Questions ?

Please refer to the Backport tool documentation and see the Github Action logs for details

[vault-token-factory-spectrocloud]

🎉 This PR is included in version 4.6.0 🎉

The release is available on GitHub release

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