Merge pull request #7537 from LDOUBLEV/26_doc

[bugfix]fix bug about paddle.sum in rec_aster_loss.py

ppocr/losses/rec_aster_loss.py

@@ -27,8 +27,7 @@ class CosineEmbeddingLoss(nn.Layer):
         self.epsilon = 1e-12
 
     def forward(self, x1, x2, target):
-        similarity = paddle.sum(
-            x1 * x2, dim=-1) / (paddle.norm(
+        similarity = paddle.sum(x1 * x2, axis=-1) / (paddle.norm(
             x1, axis=-1) * paddle.norm(
                 x2, axis=-1) + self.epsilon)
         one_list = paddle.full_like(target, fill_value=1)