!10407 update the example of TensorAdd and DepthToSpace operator.

From: @wangshuide2020
Reviewed-by: @liangchenghui,@wuxuejian
Signed-off-by: @liangchenghui

mindspore/ops/operations/array_ops.py

@@ -3703,7 +3703,7 @@ class DepthToSpace(PrimitiveWithInfer):
         ``Ascend``
 
     Examples:
-        >>> x = Tensor(np.random.rand(1,12,1,1), mindspore.float32)
+        >>> x = Tensor(np.random.rand(1, 12, 1, 1), mindspore.float32)
         >>> block_size = 2
         >>> depth_to_space = ops.DepthToSpace(block_size)
         >>> output = depth_to_space(x)

mindspore/ops/operations/math_ops.py

@@ -140,8 +140,8 @@ class TensorAdd(_MathBinaryOp):
 
     Examples:
         >>> add = ops.TensorAdd()
-        >>> input_x = Tensor(np.array([1,2,3]).astype(np.float32))
-        >>> input_y = Tensor(np.array([4,5,6]).astype(np.float32))
+        >>> input_x = Tensor(np.array([1, 2, 3]).astype(np.float32))
+        >>> input_y = Tensor(np.array([4, 5, 6]).astype(np.float32))
         >>> output = add(input_x, input_y)
         >>> print(output)
         [5. 7. 9.]