Update repositories.mdx

src/content/docs/en/configuration/repositories.mdx

@@ -8,7 +8,7 @@ import ThemedImage from '@components/ThemedImage.astro';
 Athena OS leverages on several repositories for accessing to security tools and learning resources in a comfortable manner.
 
 ## Athena Arch
-* [Athena repository](https://github.com/Athena-OS/athena) for Athena tools or pentesting packages
+* [Athena repository](https://github.com/Athena-OS/athena) for Athena tools or pentesting packages. It started as a clone of [BlackArch](https://github.com/BlackArch/blackarch) repository.
 * [Chaotic repository](https://aur.chaotic.cx/) for accessing to the AUR packages directly by pacman
 * [Arch Linux repositories](https://archlinux.org/packages/) for system and utility packages
   * core