correct mistake

app.py

@@ -11,7 +11,7 @@ import os
 
 
 CLIP_PATH = "google/siglip-so400m-patch14-384"
-VLM_PROMPT = "A descriptive caption for this image:"
+VLM_PROMPT = "A descriptive caption for this image"
 MODEL_PATH = "meta-llama/Meta-Llama-3.1-8B"
 CHECKPOINT_PATH = Path("wpkklhc6")
 TITLE = "<h1><center>JoyCaption Pre-Alpha (2024-07-30a)</center></h1>"
@@ -73,7 +73,7 @@ def stream_chat(input_image: Image.Image, vlm_prompt):
     # Tokenize the prompt
 	if not vlm_prompt:
 		vlm_prompt = VLM_PROMPT
-		vlm_prompt = vlm_prompt + "\n"
+	vlm_prompt = vlm_prompt + ":\n"
 	prompt = tokenizer.encode(
         vlm_prompt,
         return_tensors='pt',