Remove unnecessary period in title

Author: amas0

docsrc/users-guide/examples/Run Generated Quantities.ipynb

@@ -4,7 +4,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "#  Generating new quantities of interest.\n",
+    "#  Generating new quantities of interest\n",
     "\n",
     "\n",
     "The [generated quantities block](https://mc-stan.org/docs/reference-manual/program-block-generated-quantities.html)\n",