* [Fix] README for mmseg 1.x

* typo

* link and refine

* Improve docs style

* update lists

* update the size of image

* modify duplicate mmdet3d

* [Improvement] Add markdown linter and fix linting errors

* fixed pip

* add pypi deployment

* remove useless jobs

* fixed typo and cleanup

* delete build.tx

* add change log

Co-authored-by: Jiarui XU <xvjiarui0826@gmail.com>