fix links and set onBrokenLinks=throw

[chendelin1982]

Please check the pages of your site in the list below, and make sure you don't reference any path that does not exist.
Note: it's possible to ignore broken links with the 'onBrokenLinks' Docusaurus configuration, and let the build pass.

Exhaustive list of all broken links found:

- On source page path = /handbook/company/recruiment/:
   -> linking to /handbook/jd/%E8%BF%90%E7%BB%B4%E5%BC%80%E5%8F%91%E5%B7%A5%E7%A8%8B%E5%B8%88.md
   -> linking to /handbook/jd/%E8%BF%90%E7%BB%B4%E5%BC%80%E5%8F%91%E7%BB%8F%E7%90%86.md
   -> linking to /handbook/jd/%E4%BA%A7%E5%93%81%E7%BB%8F%E7%90%86.md
   -> linking to /handbook/jd/%E7%94%B5%E5%95%86%E8%BF%90%E8%90%A5.md
   -> linking to /handbook/jd/%E6%B3%95%E5%8A%A1%E4%B8%93%E5%91%98.md
   -> linking to /handbook/jd/%E9%94%80%E5%94%AE.md
   -> linking to /handbook/jd/%E9%94%80%E5%94%AE%E6%80%BB%E7%9B%91.md
   -> linking to /handbook/tech-test/README.md
   -> linking to /handbook/jd/%E5%AE%9E%E4%B9%A0%E7%94%9F-%E8%BF%90%E7%BB%B4.md
   -> linking to /handbook/jd/%E5%AE%9E%E4%B9%A0%E7%94%9F-%E8%BF%90%E7%BB%B4%E5%BC%80%E5%8F%91.md
   -> linking to /handbook/jd/%E5%AE%9E%E4%B9%A0%E7%94%9F-%E6%95%B0%E5%AD%97%E8%90%A5%E9%94%80.md
   -> linking to /handbook/jd/%E5%AE%9E%E4%B9%A0%E7%94%9F-%E6%B3%95%E5%8A%A1.md
   -> linking to /handbook/jd/%E5%AE%9E%E4%B9%A0%E7%94%9F-%E5%89%8D%E7%AB%AF%E5%BC%80%E5%8F%91.md

- On source page path = /handbook/company/recruiment/tech-test/:
   -> linking to tech-test/tasks.md (resolved as: /handbook/company/recruiment/tech-test/tech-test/tasks.md)
   -> linking to RabbitMQ-cxx.md (resolved as: /handbook/company/recruiment/tech-test/RabbitMQ-cxx.md)

- On source page path = /handbook/finance/congratulations:
   -> linking to ../tutorial-extras/manage-docs-versions.md (resolved as: /handbook/tutorial-extras/manage-docs-versions.md)
   -> linking to ../tutorial-extras/translate-your-site.md (resolved as: /handbook/tutorial-extras/translate-your-site.md)

- On source page path = /handbook/finance/markdown-features:
   -> linking to ../tutorial-extras/manage-docs-versions.md (resolved as: /handbook/tutorial-extras/manage-docs-versions.md)