[Docs] Fix mdformat version to support python3.6 and remove ruby install (#1672)

* [Docs] Fix mdformat version to support python3.6 and remove ruby install

* fix lint

.github/workflows/lint.yml

@@ -21,9 +21,6 @@ jobs:
           pre-commit install
       - name: Linting
         run: |
-          sudo apt-add-repository ppa:brightbox/ruby-ng -y
-          sudo apt-get update
-          sudo apt-get install -y ruby2.7
           pre-commit run --all-files
       - name: Check docstring coverage
         run: |

.pre-commit-config.yaml

@@ -25,12 +25,12 @@ repos:
       - id: mixed-line-ending
         args: ["--fix=lf"]
   - repo: https://github.com/executablebooks/mdformat
-    rev: 0.7.14
+    rev: 0.7.9
     hooks:
       - id: mdformat
         args: ["--number"]
         additional_dependencies:
-          - mdformat-gfm
+          - mdformat-openmmlab
           - mdformat_frontmatter
           - linkify-it-py
   - repo: https://github.com/codespell-project/codespell

docs/zh_cn/get_started.md

@@ -10,7 +10,7 @@
 可编译的 MMSegmentation 和 MMCV 版本如下所示，请对照对应版本安装以避免安装问题。
 
 | MMSegmentation 版本 |          MMCV 版本          |  MMClassification 版本  |
-| :---------------: | :-------------------------: | :---------------------: |
+| :-----------------: | :-------------------------: | :---------------------: |
 |       master        | mmcv-full>=1.4.4, \<=1.6.0  | mmcls>=0.20.1, \<=1.0.0 |
 |       0.24.1        | mmcv-full>=1.4.4, \<=1.6.0  | mmcls>=0.20.1, \<=1.0.0 |
 |       0.23.0        | mmcv-full>=1.4.4, \<=1.6.0  | mmcls>=0.20.1, \<=1.0.0 |

docs/zh_cn/useful_tools.md

@@ -127,7 +127,7 @@ python tools/deploy_test.py \
 #### 结果和模型
 
 |    模型    |                    配置文件                     |   数据集   | 评价指标 | PyTorch | ONNXRuntime | TensorRT-fp32 | TensorRT-fp16 |
-| :--------: | :---------------------------------------------: | :--------: | :--: | :-----: | :---------: | :-----------: | :-----------: |
+| :--------: | :---------------------------------------------: | :--------: | :------: | :-----: | :---------: | :-----------: | :-----------: |
 |    FCN     |      fcn_r50-d8_512x1024_40k_cityscapes.py      | cityscapes |   mIoU   |  72.2   |    72.2     |     72.2      |     72.2      |
 |   PSPNet   |    pspnet_r50-d8_512x1024_40k_cityscapes.py     | cityscapes |   mIoU   |  77.8   |    77.8     |     77.8      |     77.8      |
 | deeplabv3  |   deeplabv3_r50-d8_512x1024_40k_cityscapes.py   | cityscapes |   mIoU   |  79.0   |    79.0     |     79.0      |     79.0      |