Update README.md

README.md

@@ -15,7 +15,7 @@ tags:
 - Car
 - Wildlife
 - Architecture
-thumbnail: https://res.cloudinary.com/dcrovdixu/image/upload/t_Thumbnail/v1708561770/image-grid.png_12_glplgc.jpg
+thumbnail: https://imagedelivery.net/siANnpeNAc_S2q1M3-eDrA/a38aa9e8-e3cf-4d43-afbd-fd1de0896500/padthumb
 base_model: stabilityai/stable-diffusion-xl-base-1.0
 ---