Tweak installation

Author: ken-matsui

pages/docs/installation.mdx

@@ -16,9 +16,7 @@ brew install poac
 
 ### AUR (Arch Linux)
 
-Poac is available in the AUR thanks to the [poac](https://aur.archlinux.org/packages/poac) package.
-
-It can be installed with the AUR helper of your choice.
+Poac is available in the [AUR](https://aur.archlinux.org/packages/poac).
 
 ```sh
 paru -S poac