website/docs: ensure yaml code blocks have language tags (#9240)

Signed-off-by: Jens Langhammer <jens@goauthentik.io>

website/docusaurus.config.ts

@@ -1,6 +1,6 @@
-const fs = require("fs").promises;
 import type { Config } from "@docusaurus/types";
 import type * as Preset from "@docusaurus/preset-classic";
+import { themes as prismThemes } from "prism-react-renderer";
 
 module.exports = async function (): Promise<Config> {
     const remarkGithub = (await import("remark-github")).default;
@@ -82,6 +82,8 @@ module.exports = async function (): Promise<Config> {
                 indexName: "goauthentik",
             },
             prism: {
+                theme: prismThemes.oneLight,
+                darkTheme: prismThemes.oneDark,
                 additionalLanguages: ["python", "diff", "json"],
             },
         },