Add Docusaurus version to demo footer. (#255)

Author: homotechsual

demo/docusaurus.config.js

@@ -3,6 +3,7 @@
 
 const lightCodeTheme = require("prism-react-renderer/themes/github");
 const darkCodeTheme = require("prism-react-renderer/themes/dracula");
+const { DOCUSAURUS_VERSION } = require("@docusaurus/utils");
 
 /** @type {import('@docusaurus/types').Config} */
 const config = {
@@ -134,7 +135,7 @@ const config = {
             ],
           },
         ],
-        copyright: `Copyright © ${new Date().getFullYear()} Palo Alto Networks, Inc. Built with Docusaurus.`,
+        copyright: `Copyright © ${new Date().getFullYear()} Palo Alto Networks, Inc. Built with Docusaurus ${DOCUSAURUS_VERSION}.`,
       },
       prism: {
         theme: lightCodeTheme,