fix sample code for Conv2DTranspose_cn and Pool2D, test=develop (#1975)

doc/fluid/api_cn/dygraph_cn/Conv2DTranspose_cn.rst

@@ -71,7 +71,7 @@ Conv2DTranspose
     with fluid.dygraph.guard():
         data = np.random.random((3, 32, 32, 5)).astype('float32')
         conv2DTranspose = fluid.dygraph.nn.Conv2DTranspose(
-              'Conv2DTranspose', num_filters=2, filter_size=3)
+              num_channels=32, num_filters=2, filter_size=3)
         ret = conv2DTranspose(fluid.dygraph.base.to_variable(data))
 
 属性

doc/fluid/api_cn/dygraph_cn/Pool2D_cn.rst

@@ -74,14 +74,13 @@ Pool2D
 
     import paddle.fluid as fluid
     from paddle.fluid.dygraph.base import to_variable
-    import numpy as np
 
     with fluid.dygraph.guard():
-        data = np.random.random((3, 32, 32, 5)).astype('float32')
-        pool2d = fluid.dygraph.Pool2D(pool_size=2,
+       data = numpy.random.random((3, 32, 32, 5)).astype('float32')
+       pool2d = fluid.dygraph.Pool2D(pool_size=2,
                       pool_type='max',
                       pool_stride=1,
                       global_pooling=False)
-        pool2d_res = pool2d(to_variable(data))
+       pool2d_res = pool2d(to_variable(data))