Update app.py

app.py

@@ -27,7 +27,7 @@ grad.Interface(fn=generate,
                inputs=txt,
                outputs=out,
                title="Promptist Demo",
-               description="Promptist is a prompt interface for Stable Diffusion v1 that optimizes user input into model-preferred prompts.",
+               description="Promptist is a prompt interface for Stable Diffusion v1-4 (https://huggingface.co/CompVis/stable-diffusion-v1-4) that optimizes user input into model-preferred prompts.",
                examples=examples,
                allow_flagging='never',
                cache_examples=False,