Minor README change

Author: nateinaction

README.md

@@ -53,16 +53,9 @@ findmnt
 
 Now you want to install the firmware to the board.
 ```shell
-make install BOARD_DIR=[path-to-your-board]
+cp build-artifacts/zephyr.uf2 [path-to-your-board]
 ```
 
-or
-```
-cp build-fprime-automatic-zephyr/zephyr/zephyr.uf2 [path-to-your-board]
-```
-to copy the uf2 if the make install isn't working
-
-
 Finally, run the fprime-gds.
 ```shell
 make gds