change inner quotes to single quotes

guest_info_retriever.py

@@ -49,10 +49,10 @@ def guest_info_retriever_factory():
         Document(
             page_content="\n".join(
                 [
-                    f"Name: {guest["name"]}",
-                    f"Relation: {guest["relation"]}",
-                    f"Description: {guest["description"]}",
-                    f"Email: {guest["email"]}",
+                    f"Name: {guest['name']}",
+                    f"Relation: {guest['relation']}",
+                    f"Description: {guest['description']}",
+                    f"Email: {guest['email']}",
                 ]
             ),
             metadata={"name": guest["name"]},