chore: make html/body props docs clearer and cleaner

[felipefreitag]

---

Summary by cubic

Clarified and cleaned up docs for the Html and Body components: lang and dir now say to set the same values on both, with cross-links. Notes cover clients that strip html/body tags, and grammar is fixed.

^{Written for commit 7340671. Summary will update on new commits.}

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Latest commit: 7340671

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Project	Deployment	Actions	Updated (UTC)
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[cubic-dev-ai]

All reported issues were addressed across 2 files

Confidence score: 5/5

• Safe to merge after the addressed issues were fixed.

<sub>Reply with feedback, questions, or to request a fix.

Re-trigger cubic</sub>

[cubic-dev-ai]

0 issues found across 2 files (changes from recent commits).

<sub>Auto-approved: Documentation clarification and cleanup: adds cross-links between Html and Body lang/dir props and explains why both are needed. No behavior or logic changes.

Re-trigger cubic</sub>