[cli] Modify the current CLI installation description and add an AUR installation script. (#915)

* add aur install script

Author: WGB5445

apps/nextra/pages/en/build/cli.mdx

@@ -30,7 +30,7 @@ For more advanced users, the CLI can also be used to run a private Aptos network
     <div className="flex flex-col gap-2">
       <Card.Title>Windows</Card.Title>
       <Card.Description>
-         Install Aptos CLI on Windows via python script or pre-compiled binary
+         Install Aptos CLI on Windows via powershell script or pre-compiled binary
       </Card.Description>
     </div>
   </Card>
@@ -39,7 +39,7 @@ For more advanced users, the CLI can also be used to run a private Aptos network
     <div className="flex flex-col gap-2">
       <Card.Title>Linux</Card.Title>
       <Card.Description>
-         Install Aptos CLI on Linux via python script or pre-compiled binary
+         Install Aptos CLI on Linux via shell script or pre-compiled binary
       </Card.Description>
     </div>
   </Card>

apps/nextra/pages/en/build/cli/install-cli/install-cli-linux.mdx

@@ -40,6 +40,23 @@ For Linux, the easiest way to install the Aptos CLI tool is via shell script, al
 If you would like to update the Aptos CLI to the latest version, you can run `aptos update`.
 </Callout>
 
+# Install via Package Manager (Optional)
+
+<Callout type="info">
+When installing Aptos via a package manager, please update it through the same package manager in the future.
+</Callout>
+
+### Arch Linux
+#### Install via AUR (Arch User Repository)
+```bash filename="Terminal"
+git clone https://aur.archlinux.org/aptos-bin.git
+cd aptos-bin
+makepkg -si
+```
+or use an AUR helper like `yay`:
+```bash filename="Terminal"
+yay -S aptos-bin
+```
 # Install via Pre-Compiled Binaries (Backup Method)
 
 <Steps>