update doc

doc/paddle/api/alias_api_mapping

@@ -74,6 +74,7 @@ paddle.fluid.layers.has_nan	paddle.has_nan,paddle.tensor.has_nan,paddle.tensor.s
 paddle.tensor.manipulation.expand_as	paddle.expand_as,paddle.tensor.expand_as
 paddle.fluid.layers.crf_decoding	paddle.static.nn.crf_decoding
 paddle.fluid.framework.default_main_program	paddle.static.default_main_program
+paddle.fluid.framework.is_compiled_with_cuda	paddle.is_compiled_with_cuda,paddle.device.is_compiled_with_cuda
 paddle.fluid.framework.Variable	paddle.Variable,paddle.framework.Variable
 paddle.fluid.layers.l2_normalize	paddle.nn.functional.l2_normalize,paddle.nn.functional.norm.l2_normalize
 paddle.fluid.layers.log_loss	paddle.nn.functional.log_loss,paddle.nn.functional.loss.log_loss

doc/paddle/api/paddle/fluid/is_compiled_with_cuda_cn.rst → doc/paddle/api/paddle/fluid/framework/is_compiled_with_cuda_cn.rst

@@ -10,15 +10,15 @@ is_compiled_with_cuda
 
 检查 ``whl`` 包是否可以被用来在GPU上运行模型
 
-返回：支持gpu则为True,否则为False。
+返回：支持GPU则为True，否则为False。
 
-返回类型：out(boolean)
+返回：是否支持GPU的bool值
 
 **示例代码**
 
 .. code-block:: python
 
-    import paddle.fluid as fluid
-    support_gpu = fluid.is_compiled_with_cuda()
+    import paddle
+    support_gpu = paddle.is_compiled_with_cuda()