update the README.md for face alignment

Author: jiezhang-zz

FaceAlignment/README.md

@@ -39,7 +39,7 @@ This version is developed to detect five facial landmarks, i.e., two eyes' cente
 To detect these facial landmarks, one should first instantiate an object of `seeta::FaceAlignment` with path of the model file.
 
 ```c++
-seeta::FaceAlignment landmark_detector("seeta_fa_v1.0.bin");
+seeta::FaceAlignment landmark_detector("seeta_fa_v1.1.bin");
 ```
 
 Then one can call `PointDetectLandmarks(ImageData gray_im, FaceInfo face_info, FacialLandmark *points)` to detect landmarks.