!199 Fix dim of ReverseV2 in CRNN

Merge pull request !199 from chenhaozhe/fix-crnn-reverse

official/cv/crnn/src/crnn.py

@@ -231,8 +231,8 @@ class CRNNV1(nn.Cell):
         self.transpose = P.Transpose()
         self.squeeze = P.Squeeze(axis=0)
         self.vgg = VGG()
-        self.reverse_seq1 = P.ReverseV2(axis=[1])
-        self.reverse_seq2 = P.ReverseV2(axis=[1])
+        self.reverse_seq1 = P.ReverseV2(axis=[0])
+        self.reverse_seq2 = P.ReverseV2(axis=[0])
         self.seq_length = Tensor(np.ones((self.batch_size), np.int32) * config.num_step, mstype.int32)
         self.concat1 = P.Concat(axis=2)
         self.rnn_dropout = nn.Dropout(0.9)