Fix url (404 error) (#15683)

Fix page url for face recognition - page not found error(404)

Author: healess

example/README.md

@@ -151,7 +151,7 @@ If your tutorial depends on specific packages, simply add them to this provision
 
 ### <a name="deep-learning-examples-other"></a>Other Deep Learning Examples with MXNet
 
-* [Face Recognition with ArcFace](https://github.com/onnx/models/tree/master/models/face_recognition/ArcFace) - ONNX model for face recognition with notebooks for training, validating and running inference in MXNet by [abhinavs95](https://github.com/abhinavs95)
+* [Face Recognition with ArcFace](https://github.com/onnx/models/tree/master/vision/body_analysis/arcface) - ONNX model for face recognition with notebooks for training, validating and running inference in MXNet by [abhinavs95](https://github.com/abhinavs95)
 * [Chinese plate recognition](https://github.com/imistyrain/mxnet-mr) - Recognize Chinese vehicle plate, by [imistyrain](https://github.com/imistyrain)
 * [Fast R-CNN](https://github.com/precedenceguo/mx-rcnn) by [Jian Guo](https://github.com/precedenceguo)
 * "End2End Captcha Recognition (OCR)" by [xlvector](https://github.com/xlvector) [github link](https://github.com/xlvector/learning-dl/tree/master/mxnet/ocr) [Blog in Chinese](http://blog.xlvector.net/2016-05/mxnet-ocr-cnn/)