Update x2paddle_model_zoo.md

x2paddle_model_zoo.md

@@ -39,7 +39,7 @@
 | ResNet50 | [code](https://github.com/soeaver/caffe-model/blob/master/cls/resnet/deploy_resnet50.prototxt) |
 | Unet | [code](https://github.com/jolibrain/deepdetect/blob/master/templates/caffe/unet/deploy.prototxt) |
 | VGGNet | [code](https://gist.github.com/ksimonyan/211839e770f7b538e2d8#file-vgg_ilsvrc_16_layers_deploy-prototxt) |
-
+| FaceDetection | [code](https://github.com/ShiqiYu/libfacedetection/blob/master/models/caffe/yufacedetectnet-open-v1.prototxt) |