docs(readme): add the video2x AUR package information

Signed-off-by: k4yt3x <[email protected]>

README.md

@@ -54,6 +54,7 @@ You can download the latest Windows release on the [releases page](https://githu
 Video2X packages are available for the Linux distros listed below. If you'd like to build it from source code, refer to the [PKGBUILD](packaging/arch/PKGBUILD) file for a general overview of the required dependencies and commands. If a package is not available for your distro and you prefer not to compile the program from source code, consider using the container image outlined in the next section.
 
 - Arch Linux: AUR packages, maintained by [@K4YT3X](https://github.com/k4yt3x).
+  - [aur/video2x](https://aur.archlinux.org/packages/video2x)
   - [aur/video2x-git](https://aur.archlinux.org/packages/video2x-git)
   - [aur/video2x-qt6](https://aur.archlinux.org/packages/video2x-qt6)
   - [aur/video2x-qt6-git](https://aur.archlinux.org/packages/video2x-qt6-git)

docs/book/src/installing/linux.md

@@ -5,6 +5,7 @@ Video2X packages are available for the Linux distros listed below. If you'd like
 ## Arch Linux
 
 - AUR packages, maintained by [@K4YT3X](https://github.com/k4yt3x).
+  - [aur/video2x](https://aur.archlinux.org/packages/video2x)
   - [aur/video2x-git](https://aur.archlinux.org/packages/video2x-git)
   - [aur/video2x-qt6](https://aur.archlinux.org/packages/video2x-qt6)
   - [aur/video2x-qt6-git](https://aur.archlinux.org/packages/video2x-qt6-git)