Update README.md

README.md

@@ -15,7 +15,7 @@ tags:
 - Car
 - Wildlife
 - Architecture
-thumbnail: https://res.cloudinary.com/dcrovdixu/image/upload/t_Thumbnail/v1708559717/image-grid.png_10_vpt1zl.jpg
+thumbnail: https://imagedelivery.net/siANnpeNAc_S2q1M3-eDrA/7bbcc140-3e88-442d-d127-85a79e7fbb00/padthumb
 base_model: stabilityai/stable-diffusion-xl-base-1.0
 ---