docs: dark-mode - add missing AdonisJS reference

Author: SutuSebastian

apps/web/content/docs/customize/dark-mode.mdx

@@ -54,3 +54,4 @@ Here's a list of step-by-step **dark mode** integration guide for the most popul
 - [Remix](/docs/guides/remix#dark-mode)
 - [Astro](/docs/guides/astro#dark-mode)
 - [Gatsby](/docs/guides/gatsby#dark-mode)
+- [AdonisJS](/docs/guides/adonis-js#dark-mode)