Update app.py

app.py

@@ -16,10 +16,10 @@ def response_generator(query):
     word = ''
 
     res =requests.post(
-        f'{os.environ['api_url']}',
+        f"{os.environ['api_url']}",
         headers={
             'Content-Type': 'application/json',
-            'Authorization': f'Bearer {os.environ['api_key']}'
+            'Authorization': f"Bearer {os.environ['api_key']}"
         },
         json={
             "inputs": {},