docs: fix install doc

Author: Adriankhl

README.md

@@ -499,4 +499,4 @@ ninja -j4
 ninja install
 ```
 
-The folder `../install/gpu/addons/godot_llm` (`cpu` instead of `vulkan` for cpu build) can be copy directly to the `addons` folder of your godot project.
+The folder `../install/gpu/addons/godot_llm` (`cpu` instead of `gpu` for cpu build) can be copy directly to the `addons` folder of your godot project.