[Docs] Translate understand_mmcv about registry.md and fix config.md

[AluminiumOxide]

add translation of registry.md and fix config.md

[zhouzaida]

Thanks for your translation. Please fix the lint.

[codecov]

Codecov Report

Merging #1204 (653e116) into master (6659c38) will increase coverage by 1.13%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #1204      +/-   ##
==========================================
+ Coverage   68.00%   69.14%   +1.13%     
==========================================
  Files         160      162       +2     
  Lines       10442    10746     +304     
  Branches     1902     1978      +76     
==========================================
+ Hits         7101     7430     +329     
+ Misses       2968     2927      -41     
- Partials      373      389      +16     

Flag	Coverage Δ
unittests	69.14% <ø> (+1.13%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
mmcv/utils/parrots_wrapper.py	47.76% <0.00%> (-11.62%)	⬇️
mmcv/version.py	82.35% <0.00%> (-9.96%)	⬇️
mmcv/cnn/utils/weight_init.py	85.92% <0.00%> (-5.43%)	⬇️
mmcv/utils/logging.py	95.23% <0.00%> (-4.77%)	⬇️
mmcv/runner/hooks/logger/tensorboard.py	34.37% <0.00%> (-1.99%)	⬇️
mmcv/parallel/distributed.py	20.83% <0.00%> (-1.62%)	⬇️
mmcv/parallel/distributed_deprecated.py	66.66% <0.00%> (-0.73%)	⬇️
mmcv/ops/upfirdn2d.py	14.58% <0.00%> (-0.72%)	⬇️
mmcv/cnn/bricks/activation.py	87.50% <0.00%> (-0.50%)	⬇️
mmcv/runner/dist_utils.py	50.00% <0.00%> (-0.50%)	⬇️
... and 91 more

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 6659c38...653e116. Read the comment docs.

[MeowZheng]

LGTM

[zhouzaida]

LGTM

[OpenMMLab-Coodinator]

Hi @AluminiumOxide ！First of all, we want to express our gratitude for your significant PR in this project. Your contribution is highly appreciated, and we are grateful for your efforts in helping improve this open-source project during your personal time. We believe that many developers will benefit from your PR.

We would also like to invite you to join our Special Interest Group (SIG) private channel on Discord, where you can share your experiences, ideas, and build connections with like-minded peers. To join the SIG channel, simply message moderator— OpenMMLab on Discord or briefly share your open-source contributions in the #introductions channel and we will assist you. Look forward to seeing you there! Join us ：https://discord.gg/UjgXkPWNqA

If you have WeChat account，welcome to join our community on WeChat. You can add our assistant ：openmmlabwx. Please add "mmsig + Github ID" as a remark when adding friends：）
Thank you again for your contribution❤