docs: bump docusaurus to v3 (#583)

Bumps the Docusaurus version to v3 and swaps the
`docusaurus-plugin-typedoc-api` for our updated fork.

Author: barjin

website/docusaurus.config.js

@@ -82,7 +82,7 @@ module.exports = {
     ]),
     plugins: [
         [
-            'docusaurus-plugin-typedoc-api',
+            '@apify/docusaurus-plugin-typedoc-api',
             {
                 projectRoot: `${__dirname}/..`,
                 changelogs: false,