docs: Add Discord social link (#777)

Co-authored-by: Dylan Anthony <[email protected]>

Author: dbanty

docs/astro.config.mjs

@@ -12,6 +12,7 @@ export default defineConfig({
       favicon: "/favicon.png",
       social: {
         github: "https://github.com/knope-dev/knope",
+        discord: "https://discord.gg/sQSJtQAvb8",
       },
       editLink: {
         baseUrl: "https://github.com/knope-dev/knope/edit/main/docs/",