Fixed header issue in template (#395)

Author: lkailynncar

appendix/template.ipynb

@@ -4,6 +4,8 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
+    "# Project Pythia Notebook Template\n",
+    "\n",
     "## How to Use This Page\n",
     "\n",
     "This page is designed as a template. As such, each section contains instructions for the content added to the equivalent section of a new notebook, with the exception of this section, and the Setting Up a New Notebook section. Because this is not a tutorial, the overall structure of the page does not need to be cohesive.\n",
@@ -23,7 +25,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "# Project Pythia Notebook Template\n",
+    "## Project Pythia Notebook Template\n",
     "\n",
     "Each notebook must be properly titled with a top level Markdown header, i.e., a header title prefixed by a single # mark. Nowhere else in the notebook should you use a top level header. This header will be automatically used by the Pythia book-building process to generate the page title, which will then be added to the navbar, table of contents, etc. As such, the header needs to be short, concise, and descriptive. After the header line, add a separate Jupyter Notebook cell with the text `---`. This adds a separating line used to separate the title from the overview and prerequisites. This technique will also be used later to separate other sections."
    ]