add install and update instructions for arch linux

README.md

@@ -426,10 +426,10 @@ echo 'source /usr/local/opt/powerlevel10k/powerlevel10k.zsh-theme' >>! ~/.zshrc
 
 ### Arch Linux
 
-There is [zsh-theme-powerlevel10k](
+```zsh
-  https://www.archlinux.org/packages/community/any/zsh-theme-powerlevel10k/) community package and
+yay -Sy --noconfirm zsh-theme-powerlevel10k-git
-[zsh-theme-powerlevel10k-git](https://aur.archlinux.org/packages/zsh-theme-powerlevel10k-git/) AUR
+echo 'source /usr/share/zsh-theme-powerlevel10k/powerlevel10k.zsh-theme' >>! ~/.zshrc
-package. Both are old and broken. **Do not use them.**
+```
 
 ## Configuration
 
@@ -589,7 +589,7 @@ Powerlevel10k is released under the
 The command to update Powerlevel10k depends on how it was installed.
 
 | Installation              | Update command                                              |
-|-------------------------|------------------------------------------------|
+|---------------------------|-------------------------------------------------------------|
 | [Manual](#manual)         | `git -C ~/powerlevel10k pull`                               |
 | [Oh My Zsh](#oh-my-zsh)   | `git -C ${ZSH_CUSTOM:-~/.oh-my-zsh/custom}/themes/powerlevel10k pull` |
 | [Prezto](#prezto)         | `zprezto-update`                                            |
@@ -600,6 +600,7 @@ The command to update Powerlevel10k depends on how it was installed.
 | [Zplugin](#zplugin)       | `zplugin update`                                            |
 | [Zinit](#zinit)           | `zinit update`                                              |
 | [Homebrew](#homebrew)     | `brew update && brew upgrade`                               |
+| [Arch Linux(#arch-linux)] | `yay -Syu --noconfirm --needed zsh-theme-powerlevel10k-git` |
 
 **IMPORTANT**: Restart Zsh after updating Powerlevel10k. [Do not use `source ~/.zshrc`](
   #weird-things-happen-after-typing-source-zshrc).