Replace arrow function with a function expression

Author: remcohaszing

lib/index.js

@@ -213,7 +213,9 @@ export async function MarkdownAsync(options) {
  */
 export function MarkdownHooks(options) {
   const processor = useMemo(
-    () => createProcessor(options),
+    function () {
+      return createProcessor(options)
+    },
     [options.rehypePlugins, options.remarkPlugins, options.remarkRehypeOptions]
   )
   const [error, setError] = useState(