fix doc of cn_doc, test=develop test=document_preview

doc/fluid/api_cn/layers_cn/gather_cn.rst

@@ -39,8 +39,8 @@ gather
 ..  code-block:: python
   
   import paddle.fluid as fluid
-  x = fluid.layers.data(name='x', shape=[-1, 5], dtype='float32')
-  index = fluid.layers.data(name='index', shape=[-1, 1], dtype='int32')
+  x = fluid.data(name='x', shape=[-1, 5], dtype='float32')
+  index = fluid.data(name='index', shape=[-1, 1], dtype='int32')
   output = fluid.layers.gather(x, index)
 
 

doc/fluid/api_cn/layers_cn/gather_nd_cn.rst

@@ -63,8 +63,8 @@ gather_nd
 .. code-block:: python
 
     import paddle.fluid as fluid
-    x = fluid.layers.data(name='x', shape=[3, 4, 5], dtype='float32')
-    index = fluid.layers.data(name='index', shape=[2, 2], dtype='int32')
+    x = fluid.data(name='x', shape=[3, 4, 5], dtype='float32')
+    index = fluid.data(name='index', shape=[2, 2], dtype='int32')
     output = fluid.layers.gather_nd(x, index)
 
 

doc/fluid/api_cn/layers_cn/scatter_nd_add_cn.rst

@@ -54,9 +54,9 @@ scatter_nd_add
 .. code-block:: python
 
         import paddle.fluid as fluid
-        ref = fluid.layers.data(name='ref', shape=[3, 5, 9, 10], dtype='float32', append_batch_size=False)
-        index = fluid.layers.data(name='index', shape=[3, 2], dtype='int32', append_batch_size=False)
-        updates = fluid.layers.data(name='update', shape=[3, 9, 10], dtype='float32', append_batch_size=False)
+        ref = fluid.data(name='ref', shape=[3, 5, 9, 10], dtype='float32')
+        index = fluid.data(name='index', shape=[3, 2], dtype='int32')
+        updates = fluid.data(name='update', shape=[3, 9, 10], dtype='float32')
         output = fluid.layers.scatter_nd_add(ref, index, updates)
 
 

doc/fluid/api_cn/layers_cn/scatter_nd_cn.rst

@@ -22,8 +22,8 @@ scatter_nd
 .. code-block:: python
 
         import paddle.fluid as fluid
-        index = fluid.layers.data(name='index', shape=[3, 2], dtype='int64', append_batch_size=False)
-        updates = fluid.layers.data(name='update', shape=[3, 9, 10], dtype='float32', append_batch_size=False)
+        index = fluid.data(name='index', shape=[3, 2], dtype='int64')
+        updates = fluid.data(name='update', shape=[3, 9, 10], dtype='float32')
         shape = [3, 5, 9, 10]
         output = fluid.layers.scatter_nd(index, updates, shape)