GitLab

* refaictor CONTRIBUDING.MD

* refaictor CONTRIBUDING.MD

* fix source rvm shell command

* fix lint

* add chinese contributing.md

* fix error render

* fix error render

* refine description

* refine description

* minor refine

* install ffmpeg before ut

* Minor retfine

* Minor refine

* refine chinese contributing.md

* Refine

* Fix as comment

* Fix as comment

* restore pr.md

* minor refine

* minor refine

* update chinese CONTRIBUTING.md in root dir

* adjust imgae size

* update en CONTRIBUTING.md

* update en CONTRIBUTING.md

* update contributing.md in docs

* restore change of index.rst

* Fix as comment

* minor refine

* remove content in PR.md

* minor refine

* minor refine

* minor refine

* Fix as comment

* rename

* minor refine

* update support for linearly learning rate decay

* Fix LinearAnnealingLrUpdaterHook, update LinearAnnealingMomentumUpdaterHook, add unit test

add docstring

add docstring

update linear lr momentum schedule test

fix ci

Fix CI

* add lr and momentum hook to runner and hooks package

add lr and momentum hook to runner and hooks package

* replace multi_optimziers with multi_optimizers
Co-authored-by: HAOCHENYE <21724054@zju.edu.cn>
Co-authored-by: Mashiro <57566630+HAOCHENYE@users.noreply.github.com>

* [Docs] Refactor the structure of documentation

* [Docs] Refactor the structure of documentation

* fix symlink

* fix link

* fix typo

* polish docstring

* fix docstring