Updated readme

Author: Erol444

docs/source/samples/StereoDepth/stereo_depth_custom_mesh.rst

@@ -2,6 +2,8 @@ Stereo Depth custom Mesh
 ========================
 
 This example shows how you can load custom mesh to the device and use it for depth calculation.
+In this example, mesh files are generated from camera calibration data, but you can also use
+your own mesh files.
 
 By default, :ref:`StereoDepth` will use the same logic as inside the ``def getMesh()`` to calculate
 mesh files whenever horizontal FOV is larger than 90°. You could also force calculate the mesh using:
@@ -20,6 +22,15 @@ StereoDepth node also allows you to load mesh files directly from a file path:
     stereo = pipeline.create(dai.node.StereoDepth)
     stereo.loadMeshFiles('path/to/left_mesh', 'path/to/right_mesh')
 
+Demo
+####
+
+.. image:: https://github.com/luxonis/depthai-python/assets/18037362/f2031bd4-0748-4a06-abb1-b52e9a17134e
+
+On the image above you can see that the rectified frame isn't as wide FOV as the original one,
+that's because the distortion correction is applied (in this case via custom mesh files), so the
+disparity matching can be performed correctly.
+
 Setup
 #####