!17878 Rectification of operator ease of use part 1

From: @dinglinhe123
Reviewed-by: @liangchenghui,@wuxuejian
Signed-off-by: @liangchenghui

mindspore/nn/sparse/sparse.py

@@ -21,14 +21,15 @@ class SparseToDense(Cell):
     """
     Converts a sparse tensor into dense.
 
-    Not yet supported by any backend at the moment.
-
     Inputs:
         - **sparse_tensor** (:class:`mindspore.SparseTensor`): the sparse tensor to convert.
 
     Outputs:
         Tensor, converted from sparse tensor.
 
+    Args:
+        sparse_tensor (SparseTensor): the sparse tensor to convert.
+
     Raises:
         TypeError: If the`sparse_tensor.indices` data type is neither int32 nor int64.
         TypeError: If the 'sparse_tensor.values' data type is not a Number or bool.

mindspore/ops/operations/nn_ops.py

@@ -7788,7 +7788,7 @@ class AvgPool3D(Primitive):
         >>> avg_pool3d = ops.AvgPool3D(kernel_size=2, strides=1, pad_mode="valid")
         >>> output = avg_pool3d(input)
         >>> print(output)
-        [[[[[5. 6.]]]
+        [[[[[ 5.  6.]]]
           [[[17. 18.]]]]]
     """
     @prim_attr_register