fix(docs-page): process.env.ENABLE_VERSIONED_DOCS is string

[thiskevinwang]

🎟️ -
🔍 -

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Description

This updates logic to treat process.env.ENABLE_VERSIONED_DOCS as string

• environment variables are always strings.

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🦋 Changeset detected

Latest commit: bd3010a

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@hashicorp/react-docs-page	Patch

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