Update README.md (#37272)

Update Arch packaging README.md with link and package mgr options

packaging/arch/README.md

@@ -2,12 +2,19 @@ Arch Packaging Files
 --------------------
 
 The PKGBUILD in this directory is here for reference.
-You should use AUR to install [ansible-git][1], using `yaourt` for instance:
+
+You can install [ansible-git][1] from the Arch User Repository (AUR), using the [AUR helper][2] of your choice.
+
+With `yaourt`:
 
     yaourt -S ansible-git
 
-You can also use a AUR package for the stable version of [ansible][2].
+With `pikaur`:
 
-  [1]: https://aur.archlinux.org/packages/ansible-git/
+    pikaur -S ansible-git
-  [2]: https://aur.archlinux.org/packages/ansible/
 
+You can also install the stable version of [ansible][3] as an AUR package.
+
+  [1]: https://aur.archlinux.org/packages/ansible-git/
+  [2]: https://wiki.archlinux.org/index.php/AUR_helpers
+  [3]: https://aur.archlinux.org/packages/ansible/