docs(readme): remove archlinuxcn (#274)

* docs(readme): remove archlinuxcn & comment archlinux section

* docs(readme): fix

---------

Co-authored-by: khai96_ <hvksmr1996@gmail.com>

Author: Integral-Tech

README.md

@@ -164,14 +164,6 @@ Follow the [installation instruction](https://github.com/KSXGitHub/pacman-repo#i
 sudo pacman -S parallel-disk-usage
 ``` -->
 
-#### From [Arch Linux CN Repository](https://github.com/archlinuxcn/repo)
-
-Follow the [installation instruction](https://github.com/archlinuxcn/repo#usage) then run the following command:
-
-```sh
-sudo pacman -S parallel-disk-usage
-```
-
 ## Distributions
 
 [![Packaging Status](https://repology.org/badge/vertical-allrepos/parallel-disk-usage.svg)](https://repology.org/project/parallel-disk-usage/versions)