docs(k3): clarify DPU0/DPU1 display interface support

[junlin-luo-spacemit]

📝 Auto-generated PR Summary

Field	Value
Chips	K3
Doc types	Datasheet, Product Docs, User Manual
Languages	EN + ZH
Files	4 modified

Generated by doc-review-agent. Edit below this block to add context.

Description

Clarifies that the K3 dual display output is asymmetric: DPU0 supports either MIPI-DSI or DP/eDP, while DPU1 supports DP/eDP only. Updated the datasheet (en/zh) and user manual overview chapter to note this, and changed "and" to "or" in the display bullet since the two DPUs don't share the same interface options. Bumped revision history in both the datasheet and user manual preface.

Type of Change

• Documentation update
• Bug fix
• New feature
• Translation update

Checklist

• Files follow the bare sidebar_position: N frontmatter format (no YAML --- blocks)
• All heading levels are sequential (no skipped levels)
• No TBD, TODO, or FIXME placeholders
• All code blocks have language identifiers
• All internal links are valid
• All images exist in static/ folders
• Bilingual counterpart file exists (for content changes)
• Chinese files use Chinese punctuation

Related Issues

N/A

What was tested

• Verified UTF-8 content integrity in the Chinese datasheet file after edits (no encoding corruption).
• Confirmed en/zh datasheet revision histories are in sync (both at V1.8).
• English user manual preface revision history updated to V1.10.

Blocked / not done

• The Chinese user manual (zh/key_stone/k3/k3_docs/k3_usermanual/) currently only has an index.md stub and lacks the chapter-per-file structure that the English side has, so no equivalent Chinese user manual chapter update was made for this change. This is a pre-existing bilingual sync gap, not something introduced by this PR.

[github-actions]

📄 Changes Summary

K3

✏️ k3_ds.md (🇺🇸 EN · Datasheet)
+3 / -1 lines

✏️ 00_preface.md (🇺🇸 EN · User Manual)
+1 / -0 lines

✏️ 01_overview.md (🇺🇸 EN · User Manual)
+2 / -1 lines

✏️ k3_ds.md (🇨🇳 ZH · Datasheet)
+4 / -2 lines

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📋 Doc Review Summary

        | Severity   | Count |
        |------------|-------|
        | Error      | 0 |
        | Warning    | 0 |
        | Suggestion | 0 |

        > Errors indicate missing or incorrect information that should be addressed before merge.
        > Warnings and suggestions are advisory — human reviewer makes the final call.

🌐 Translation Sync

The following files were changed without updating their language counterpart:

Changed file	Counterpart not in PR	Counterpart on disk
en/key_stone/k3/k3_docs/k3_usermanual/00_preface.md	zh/key_stone/k3/k3_docs/k3_usermanual/00_preface.md	❌ missing
en/key_stone/k3/k3_docs/k3_usermanual/01_overview.md	zh/key_stone/k3/k3_docs/k3_usermanual/01_overview.md	❌ missing

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