[Docs] README_ZH.md links to English documents instead of available Chinese versions

[jaxint]

Bug: README_ZH.md links to English documents, missing Chinese versions

Description

The Chinese README (README_ZH.md) contains links that point to English-only documentation files, making it difficult for Chinese-speaking users to access localized content.

Affected Links

From line 16 and lines 31-32 in README_ZH.md:

1. [白皮书](docs/WHITEPAPER.md) - Links to English whitepaper, but there's a Chinese version available: docs/zh-CN/RustChain_Whitepaper_zh-CN_v1.0.md

2. [wRTC快速入门](docs/wrtc.md) - No Chinese version exists

3. [wRTC教程](docs/WRTC_ONBOARDING_TUTORIAL.md) - No Chinese version exists

Expected Behavior

• Chinese README should link to Chinese documentation when available
• For the whitepaper, should link to docs/zh-CN/RustChain_Whitepaper_zh-CN_v1.0.md instead of docs/WHITEPAPER.md
• For wRTC docs, either create Chinese versions or clearly indicate they are English-only

Impact

• Chinese users may not realize they're clicking into English documentation
• Reduces accessibility for non-English speakers
• The Chinese whitepaper exists but isn't being used!

Suggested Fix

1. Update README_ZH.md line 16: Change docs/WHITEPAPER.md to docs/zh-CN/RustChain_Whitepaper_zh-CN_v1.0.md
2. Consider creating Chinese translations for wrtc.md and WRTC_ONBOARDING_TUTORIAL.md
3. Or add (EN) suffix to links pointing to English-only docs

Evidence

• docs/zh-CN/ directory exists with 11 Chinese docs including the whitepaper
• README_ZH.md has 419 lines, with English command examples (expected) but also untranslated documentation links
• Line 16 contains three links all pointing to English docs

Severity: Low (content issue, not breaking functionality)
Priority: Medium (affects user experience for Chinese speakers)

[Vyacheslav-Tomashevskiy]

/claim — fix in #7874 (repoint 白皮书 to docs/zh-CN whitepaper + mark English-only wRTC docs 英文). Closes this issue.