fix docs (#3958)

README_cn.md

@@ -236,7 +236,7 @@ PaddleDetection模块化地实现了多种主流目标检测算法，提供了
     - [S2ANet](configs/dota/README.md)
 - [关键点检测](configs/keypoint)
     - HigherHRNet
-    - HRNeet
+    - HRNet
 - [多目标跟踪](configs/mot/README_cn.md)
     - [DeepSORT](configs/mot/deepsort/README_cn.md)
     - [JDE](configs/mot/jde/README_cn.md)

README_en.md

@@ -250,7 +250,7 @@ The relationship between COCO mAP and FPS on Tesla V100 of representative models
   - [S2ANet](configs/dota/README.md)
 - [Keypoint detection](configs/keypoint)
   - HigherHRNet
-  - HRNeet
+  - HRNet
 - [Multi-Object Tracking](configs/mot/README.md)
   - [DeepSORT](configs/mot/deepsort/README.md)
   - [JDE](configs/mot/jde/README.md)