Update copyright message in Docusaurus config to remove build reference

Author: 8bitAlex

docusaurus.config.ts

@@ -85,7 +85,7 @@ const config: Config = {
           ],
         },
       ],
-      copyright: `Copyright © ${new Date().getFullYear()} Raid. Built with Docusaurus.`,
+      copyright: `Copyright © ${new Date().getFullYear()} Raid.`,
     },
     prism: {
       theme: prismThemes.github,