fix cross_entropy_cn.rst (#6199)

MqLeet · web-flow · commit ec8b04b801f8 · 2023-09-20T16:44:38.000+08:00
diff --git a/docs/api/paddle/nn/functional/cross_entropy_cn.rst b/docs/api/paddle/nn/functional/cross_entropy_cn.rst
@@ -100,4 +100,6 @@ cross_entropy
 代码示例
 :::::::::
 
-COPY-FROM: paddle.nn.functional.cross_entropy
+COPY-FROM: paddle.nn.functional.cross_entropy:code-example1
+
+COPY-FROM: paddle.nn.functional.cross_entropy:code-example2
