update, test=develop

doc/fluid/api_cn/tensor_cn/expand_as_cn.rst

@@ -23,6 +23,7 @@ expand_as
 :::::::::
 
 .. code-block:: python
+
        import paddle
        import numpy as np
                

doc/fluid/api_cn/tensor_cn/expand_cn.rst

@@ -23,6 +23,7 @@ expand
 :::::::::
 
 .. code-block:: python
+
        import paddle
        import numpy as np