Enhance welcome message with links to Garden Linux and User Guide

Author: fwilhe

src/main/resources/static/index.html

@@ -114,7 +114,12 @@
 
     <div class="container">
         <h1>Welcome to GLVD</h1>
-        <p>GLVD (Garden Linux Vulnerability Database) is an application for tracking security issues in Garden Linux.
+        <p>GLVD (Garden Linux Vulnerability Database) is an application for tracking security issues in
+            <a href="https://gardenlinux.org" target="_blank">Garden Linux</a>.
+        </p>
+
+        <p>To learn what GLVD is and what it can do, check out the
+            <a href="https://github.com/gardenlinux/glvd/blob/main/docs/user/README.md" target="_blank">User Guide</a>.
         </p>
 
         <form action="/getCveDetails" method="get" class="cve">