Address https://github.com/dataquestio/content/pull/1443#discussion_r749772823

Mission610Solutions.ipynb

@@ -140,7 +140,7 @@
    "outputs": [],
    "source": [
     "for row in data:\n",
-    "    row[0] = year(row[0])"
+    "    row[0] = fetch_year(row[0])"
    ]
   },
   {