[cherry-pick][MOT]fix mot doc (#4003)

configs/mot/README.md

@@ -41,7 +41,6 @@ pip install -r requirements.txt
 ```
 **Notes:**
 - Install `cython_bbox` for Windows: `pip install -e git+https://github.com/samson-wang/cython_bbox.git#egg=cython-bbox`. You can refer to this [tutorial](https://stackoverflow.com/questions/60349980/is-there-a-way-to-install-cython-bbox-for-windows).
-- Evaluation on Windows CUDA 11 environment may not be normally. It will be repaired as soon as possible. You can change to CUDA 10.2 or CUDA 10.1 environment for normal evaluation.
 - Please make sure that [ffmpeg](https://ffmpeg.org/ffmpeg.html) is installed first, on Linux(Ubuntu) platform you can directly install it by the following command:`apt-get update && apt-get install -y ffmpeg`.
 
 
@@ -135,7 +134,7 @@ If you use a stronger detection model, you can get better results. Each txt is t
 
 ## Feature Tracking Model
 
-### 【Head Tracking](./headtracking21/README.md)
+### [Head Tracking](./headtracking21/README.md)
 
 ### FairMOT Results on HT-21 Training Set
 |    backbone      |  input shape |  MOTA  |  IDF1  |  IDS  |   FP  |   FN   |   FPS   |  download | config |

configs/mot/README_cn.md

@@ -41,7 +41,6 @@ pip install -r requirements.txt
 ```
 **注意：**
 - `cython_bbox`在windows上安装：`pip install -e git+https://github.com/samson-wang/cython_bbox.git#egg=cython-bbox`。可参考这个[教程](https://stackoverflow.com/questions/60349980/is-there-a-way-to-install-cython-bbox-for-windows)。
-- Windows cuda 11环境下可能无法正常评估，会尽快修复，可换到cuda 10.2或cuda 10.1环境下进行正常评估。
 - 预测需确保已安装[ffmpeg](https://ffmpeg.org/ffmpeg.html), Linux(Ubuntu)平台可以直接用以下命令安装：`apt-get update && apt-get install -y ffmpeg`。
 
 ## 模型库
@@ -135,7 +134,7 @@ wget https://dataset.bj.bcebos.com/mot/det_results_dir.zip
 
 ## 特色垂类跟踪模型
 
-### 【人头跟踪（Head Tracking)](./headtracking21/README.md)
+### [人头跟踪（Head Tracking)](./headtracking21/README.md)
 
 ### FairMOT在HT-21 Training Set上结果
 |    骨干网络      |  输入尺寸 |  MOTA  |  IDF1  |  IDS  |   FP  |   FN   |   FPS   |  下载链接 | 配置文件 |