chore: update readme

Author: cappsyco

README.md

@@ -22,7 +22,7 @@ The applet and settings app can be installed directly from [one package in the A
 ```sh
 sudo pacman -S base-devel git
 git clone https://aur.archlinux.org/cosmic-ext-applet-logomenu-git.git
-cd cosmic-ext-applet-logomenu && makepkg -si
+cd cosmic-ext-applet-logomenu-git && makepkg -si
 ```
 
 ## Manual installation