[SCU][Docathon][Add API Legend No.48]add illustration for as_strided API

python/paddle/tensor/manipulation.py

@@ -7043,6 +7043,12 @@ def as_strided(
     Note that the output Tensor will share data with origin Tensor and doesn't
     have a Tensor copy in ``dygraph`` mode.
 
+    The following image illustrates an example: transforming an input Tensor with shape [2,4,6] into a Tensor with ``shape [8,6]`` and ``stride [6,1]``.
+
+
+    .. image:: https://githubraw.cdn.bcebos.com/PaddlePaddle/docs/develop/docs/images/api_legend/as_strided.png
+         :alt: Legend
+
     Args:
         x (Tensor): An N-D Tensor. The data type is ``float32``, ``float64``, ``int32``, ``int64`` or ``bool``
         shape (list|tuple): Define the target shape. Each element of it should be integer.