zh-cn: complete translation for mdn guidelines

[yin1999]

We have 3 sections that need to be done:

• Community What we could do for the community and what we have.

  • [x] overview #11348
  • [x] Contributing to MDN
  • [x] MDN Web Docs Repositories #15724
  • [x] Getting started with MDN Web Docs #15795
  • [x] Security vulnerability response steps #16151
  • [x] MDN Web Docs Localization #15732
  • [x] Open source etiquette
  • [x] Communication channels #13511
  • [x] Community discussions #13815
  • [x] Learn forum
  • [x] Issues #15706
  • [x] PR #13953
  • [x] MDN content #15049
  • [x] Role and teams #15400

• Writing guidelines How to do contributions

  • [x] Experimental, deprecated, and obsolete #13406

  • [x] overview #11064

  • [x] What we write #12043

  • [x] Criteria for inclusion #16456

  • [x] Writing style #13289

  • [x] Code style guide #16990

  • [x] HTML guideline #17021

  • [x] CSS guideline #17413

  • [x] JavaScript guideline #17007

  • [x] Shell prompt guideline #17048

  • [x] How to (many sub pages left here) #12296

  • [x] How to write an API reference #12864

    • [x] API reference sidebars #16512
    • [x] Information contained in a WebIDL file #17654

  • [x] How to create, move, delete, and edit pages #13065

  • [x] How to write in Markdown #15064

  • [x] How to add images and media #17559

  • [x] How to document a CSS property #15585

  • [x] How to document an HTTP header #15392

  • [x] How to document web errors #15616

  • [x] How to research a technology #15780 by @yarusome

  • [x] How to use structured data #16506

  • [x] How to write an entry in the glossary #10973

  • [x] Page struct (many sub pages left here)

  • [x] Banners and notices #13048

  • [x] Code example (already done)

  • [x] BCD guide #13584

  • [x] Live sample (already done)

  • [x] Page types #13876 #15395

  • [x] Quicklinks #13655

  • [x] Specification tables #13245

  • [x] Syntax sections #15857

  • [x] Using macros #13584

    • [x] Commonly-used macros #15338
    • [x] Other macros (already done)

  • [x] Feature status #19492

  • [x] copyright (small effort) #13575

• [x] sidebar translation mdn/yari#9129

• [ ] changelog

[jasonren0403]

The

• contributing
• open source etiquette
• Learn forum

pages are well done now, we may focus on other pages.

[awxiaoxian2020]

I will work on what we write

[yarusome]

我申请翻译 How to research a technology。

[jasonren0403]

I will work on Syntax sections.

[yin1999]

我申请翻译 How to research a technology。

当然可以，感谢！

[JasonLamv-t]

我会更新 JavaScript guideline 部分。

[jasonren0403]

我来翻译 Shell prompt guideline 🙋

[yin1999]

I'll translate the "Information contained in a WebIDL file" document

[jasonren0403]

Document about feature statuses was added in Febuary 23rd, let's reopen this issue getting this translated 😄