Typo

Author: JeanVanDyk

docs/source/notebooks/its_no_treatment_time.ipynb

@@ -1478,6 +1478,14 @@
     "# get summary stats\n",
     "az.summary(last_cumulative_estimate)"
    ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "### References\n",
+    "\n"
+   ]
   }
  ],
  "metadata": {