Updating links

Author: arcstur

docs/src/installation/index.md

@@ -84,9 +84,9 @@ $ sudo pacman -S tectonic
 and [tectonic-git][arch-tectonic-git] from the [AUR].
 
 [Arch Linux]: https://archlinux.org/
-[arch-tectonic]: https://aur.archlinux.org/packages/tectonic-bin/
+[arch-tectonic]: https://archlinux.org/packages/community/x86_64/tectonic/
 [AUR]: https://aur.archlinux.org/
-[arch-tectonic-git]: https://aur.archlinux.org/packages/tectonic/
+[arch-tectonic-git]: https://aur.archlinux.org/packages/tectonic-git
 
 ### Homebrew