Fix doc comment formatting

Author: pklaschka

lib/extract/runCLI.ts

@@ -9,7 +9,9 @@ import { TypeScriptSourceFile } from "./TypeScriptSourceFile.ts";
  * @param rootDir the root directory of the project. Usually `import.meta.dirname`.
  *
  * @example Running from the configuration options
+ * ```ts
  * import.meta.main && await runCLI(options, import.meta.dirname);
+ * ```
  */
 export async function runCLI({
   pattern = "**/*.{ts,tsx}",