Fix f-string formatting error in disease_qa_tutorial example

Author: Kaushalsurana

disease_qa_tutorial.ipynb

@@ -99,9 +99,7 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "# Step 3: Create the API Query Function\n",
-    "\n",
-    "def ask_disease_question(question):\n",
+    "# Step 3: Create the API Query Functiondef ask_disease_question(question):\n",
     "    \"\"\"\n",
     "    Send a disease-related question to the Perplexity API and parse the response.\n",
     "    \n",
@@ -115,12 +113,12 @@
     "You are a medical assistant. Please answer the following question about a disease and provide only valid JSON output.\n",
     "The JSON object must have exactly four keys: \"overview\", \"causes\", \"treatments\", and \"citations\".\n",
     "For example:\n",
-    "{\n",
+    "{{\n",
     "  \"overview\": \"A brief description of the disease.\",\n",
     "  \"causes\": \"The causes of the disease.\",\n",
     "  \"treatments\": \"Possible treatments for the disease.\",\n",
     "  \"citations\": [\"https://example.com/citation1\", \"https://example.com/citation2\"]\n",
-    "}\n",
+    "}}\n",
     "Now answer this question:\n",
     "\"{question}\"\n",
     "    \"\"\".strip()\n",
@@ -156,9 +154,7 @@
     "\n",
     "    except Exception as e:\n",
     "        print(f\"Error: {e}\")\n",
-    "        return None\n",
-    "\n",
-    "print('ask_disease_question function defined.')"
+    "        return None"
    ]
   },
   {