fix prompt to work with f string

app.py

@@ -48,9 +48,9 @@ def find_orgs_gpt(sentence):
     ```
     Your output should be a a json object that containes the extracted organizations.
     Output example 1:
-    {"Organizations": ["Organization 1", "Organization 2", "Organization 3"]}
+    {{\"Organizations\": [\"Organization 1\", \"Organization 2\", \"Organization 3\"]}}
     Output example 2:
-    {"Organizations": []}
+    {{\"Organizations\": []}}
     """
     
     sent_orgs_str = get_completion(prompt)