fix: check markdown grammar issues

[leemos-xx]

What this PR does:
让CI自动检查markdown的语法，目前使用markdownlint来实现，考虑到贡献者体验和已知的因格式原因导致的渲染问题，现在仅开放对MD031 - Fenced code blocks should be surrounded by blank lines规则的校验，后续可以视情况逐步放开。

Which issue(s) this PR fixes:
Fixes #622

[codecov]

Codecov Report

Merging #665 (ae6e798) into main (0ecca3a) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main     #665   +/-   ##
=======================================
  Coverage   60.93%   60.93%           
=======================================
  Files         120      120           
  Lines        6384     6384           
=======================================
  Hits         3890     3890           
  Misses       2121     2121           
  Partials      373      373           

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[seeflood]

Looks good to me overall. Thanks !

@leemos-xx How about adding rules MD01,MD037 and MD038 ?
I added a column in your tencent doc https://docs.qq.com/sheet/DRGpJb1Ntc3hYVmh0?tab=BB08J2 marking "whether it might affect docsify", and I think MD01,MD037 and MD038 are useful too:

[leemos-xx]

Ok, I have added the check for MD001, MD037 and MD038.

[seeflood]

Review process:

• check the render result of docsify
• modify the template of proto doc
• fix docs/zh/start/faas/start.md

[seeflood]

lgtm.
@Xunzhuo Could u help review this PR?

[Xunzhuo]

LGTM, thanks @leemos-xx