Fixed Mixtral prompt

Fixed :
- History was not getting considered.
- Prompt format as per "https://huggingface.co/mistralai/Mixtral-8x7B-Instruct-v0.1"

app.py

@@ -4,13 +4,13 @@ import gradio as gr
 client = InferenceClient("mistralai/Mixtral-8x7B-Instruct-v0.1")
 
 def format_prompt(message, history):
-  prompt = "<s>"
-  for user_prompt, bot_response in history:
-    prompt += f"[INST] {user_prompt} [/INST]"
-    prompt += f" {bot_response}</s> "
-  prompt += f"[INST] {message} [/INST]"
-  return prompt
-
+    prompt = "<s>"
+    for user_prompt, bot_response in history:
+        prompt += f"[INST] {user_prompt} [/INST]"
+        prompt += f" {bot_response}"    
+    prompt += f"[INST] {message} [/INST]"
+    return prompt
+    
 def generate(
     prompt, history, temperature=0.2, max_new_tokens=256, top_p=0.95, repetition_penalty=1.0,
 ):