Modification of the README.md file

README.md

@@ -47,6 +47,7 @@ In my case /<XILINX\_INSTALL\_FOLDER>/ corresponds to /tools/Xilinx/.
 
 ```
 $ git https://gitedu.hesge.ch/soma/scalp_firmware.git
+$ cd scalp_firmware
 $ git checkout SCALP-SAFE-v0.01
 ```
 
@@ -67,6 +68,7 @@ and File -> Export -> Export Hardware -> include bitstream
 
 ```
 $ git clone https://gitedu.hesge.ch/soma/scalp_petalinux.git
+$ cd scalp_petalinux
 $ git checkout SCALP-SAFE-v0.01
 ```