update buildmanual package add

Author: naoko1010hh

docs/en/BUILD.md

@@ -26,7 +26,7 @@ sudo ./tools/keyring.sh --alter-add --arch32-add
 Install the packages required for build.
 
 ```bash
-sudo pacman -S --needed git make ninja arch-install-scripts squashfs-tools libisoburn dosfstools ninja cmake
+sudo pacman -S --needed git make ninja arch-install-scripts squashfs-tools libisoburn dosfstools ninja cmake pyalpm
 ```
 
 ### Use the TUI

docs/jp/BUILD.md

@@ -25,7 +25,7 @@ sudo ./tools/keyring.sh --alter-add --arch32-add
 ビルドに必要なパッケージをインストールします。
 
 ```bash
-sudo pacman -S --needed git make ninja arch-install-scripts squashfs-tools libisoburn dosfstools ninja cmake
+sudo pacman -S --needed git make ninja arch-install-scripts squashfs-tools libisoburn dosfstools ninja cmake pyalpm
 ```
 
 ### TUIを使用する