[ADD] added fixes for tool model.

tool.py

@@ -17,7 +17,7 @@ class TranscriptSummarizer(Tool):
 
     def __init__(self, *args, **kwargs):
         super().__init__(*args, **kwargs)
-        self.summarizer = pipeline("summarization", model="facebook/usin")
+        self.summarizer = pipeline("summarization", model="google/pegasus-xsum")
         self.api_url = "https://api-inference.huggingface.co/models/ZB-Tech/Text-to-Image"
         self.headers = {"Authorization": f"Bearer {os.getenv('HF_API_KEY')}"}