Add blurb and update title of home page

app/templates/index.html

@@ -2,9 +2,12 @@
 {% from 'bootstrap5/table.html' import render_table %}
 {% block title %}Home{% endblock %}
 {% block content %}
-<h1>Welcome to the DataCite Data Files Service</h1>
-<div class="my-4">Blurb here...</div>
-<h3>Available Data Files</h3>
+<h1>DataCite Data Files Service</h1>
+<div class="my-4">
+This is a pilot portal for DataCite’s public data file. Read more about the data file on the <a href="https://support.datacite.org/docs/datacite-public-data-file">DataCite support site</a>.
+For questions or feedback, contact <a href="[email protected]">[email protected]</a>.
+</div>
+<h3>Available Public Data Files</h3>
 {{ render_table(
     datafiles,
     titles = [('name','Name'), ('description','Description'), ('size', 'Size'), ('doi', 'DOI'), ('access_button', 'Access')],