tiny pose (#5702)

* fix PP-TinyPose PrepareKeypointDataSet document test=document_fix

* fix PP-TinyPose/introduction_en.ipynb

modelcenter/PP-TinyPose/introduction_cn.ipynb

@@ -30,7 +30,7 @@
     "\n",
     "#### 2.1.1 数据集：\n",
     "\n",
-    "目前KeyPoint模型支持[COCO](https://cocodataset.org/#keypoints-2017)数据集和[MPII](http://human-pose.mpi-inf.mpg.de/#overview)数据集，数据集的准备方式请参考[关键点数据准备](https://github.com/PaddlePaddle/PaddleDetection/blob/release/2.5/docs/tutorials/KeyPointConfigGuide.md)\n",
+    "目前KeyPoint模型支持[COCO](https://cocodataset.org/#keypoints-2017)数据集和[MPII](http://human-pose.mpi-inf.mpg.de/#overview)数据集，数据集的准备方式请参考[关键点数据准备](https://github.com/PaddlePaddle/PaddleDetection/blob/release/2.5/docs/tutorials/data/PrepareKeypointDataSet.md)\n",
     "\n",
     "#### 2.1.2 模型效果速览：\n",
     "\n",

modelcenter/PP-TinyPose/introduction_en.ipynb

@@ -31,7 +31,7 @@
     "\n",
     "#### 2.1.1 dataset\n",
     "\n",
-    "The current Keypoint model supports[COCO](https://cocodataset.org/#keypoints-2017) and [MPII](http://human-pose.mpi-inf.mpg.de/#overview).Please refer to[Key point data preparation](https://github.com/PaddlePaddle/PaddleDetection/blob/release/2.5/docs/tutorials/KeyPointConfigGuide_en.md)\n",
+    "The current Keypoint model supports[COCO](https://cocodataset.org/#keypoints-2017) and [MPII](http://human-pose.mpi-inf.mpg.de/#overview).Please refer to[Key point data preparation](https://github.com/PaddlePaddle/PaddleDetection/blob/release/2.5/docs/tutorials/data/PrepareKeypointDataSet_en.md)\n",
     "\n",
     "#### 2.1.2 Model effects：\n",
     "\n",