[Docs] Fix the QuantZoo docs issue

[ice-tong]

Motivation

• ”实例分割“ -> "语义分割"
• “MMEditing” -> "MMSegementation"

Modification

• ppq/samples/QuantZoo/QuantZoo_Segmentation.py
• ppq/samples/QuantZoo/Readme.md

[ice-tong]

此外，pre-commit 建议使用 https://github.com/executablebooks/mdformat 代替 https://github.com/markdownlint/markdownlint 以避免依赖 ruby 环境：

❯ pre-commit run --all-files
[INFO] Installing environment for https://github.com/markdownlint/markdownlint.
[INFO] Once installed this environment will be reused.
[INFO] This may take a few minutes...
An unexpected error has occurred: CalledProcessError: command: ('gem', 'build', 'mdl.gemspec')
return code: 1
stdout:
    Executable `gem` not found
stderr: (none)
Check the log at ~/.cache/pre-commit/pre-commit.log

[ZhangZhiPku]

谢谢老哥！