fix(docs): add i18n to nav, and other tweaks

docs/_navbar.md

@@ -1,29 +1 @@
-- Translations
-  - [English](/index.md)
-  - [Afrikaans](/i18n/Afrikaans/index.md)
-  - [Arabic](/i18n/Arabic/index.md)
-  - [Catalan](/i18n/Catalan/index.md)
-  - [Chinese](/i18n/Chinese/index.md)
-  - [Czech](/i18n/Czech/index.md)
-  - [Danish](/i18n/Danish/index.md)
-  - [Dutch](/i18n/Dutch/index.md)
-  - [Finnish](/i18n/Finnish/index.md)
-  - [French](/i18n/French/index.md)
-  - [German](/i18n/German/index.md)
-  - [Greek](/i18n/Greek/index.md)
-  - [Hebrew](/i18n/Hebrew/index.md)
-  - [Hindi](/i18n/Hindi/index.md)
-  - [Hungarian](/i18n/Hungarian/index.md)
-  - [Italian](/i18n/Italian/index.md)
-  - [Japanese](/i18n/Japanese/index.md)
-  - [Korean](/i18n/Korean/index.md)
-  - [Norwegian](/i18n/Norwegian/index.md)
-  - [Polish](/i18n/Polish/index.md)
-  - [Portuguese](/i18n/Portuguese/index.md)
-  - [Romanian](/i18n/Romanian/index.md)
-  - [Russian](/i18n/Russian/index.md)
-  - [Serbian](/i18n/Serbian/index.md)
-  - [Swedish](/i18n/Swedish/index.md)
-  - [Turkish](/i18n/Turkish/index.md)
-  - [Ukrainian](/i18n/Ukrainian/index.md)
-  - [Vietnamese](/i18n/Vietnamese/index.md)
+- [Translations](_translations.md)