Tweak the instruction file for setting the keys of Secure Boot.

signing_uefi_application.txt

 # To perform the following instructions, some packages are needed.
-# They are all installed with apt at the beginning of install.sh.
+# They are all installed with apt at the begining of install.sh.
 
-## Create keys:
+## Create the keys:
 # run the script mkkeys.sh (better in a dedicated directory)
-mkdir -p generate_keys && cd generate_keys && cp ../mkkeys.sh && ./mkkeys.sh
+mkdir -p generate_keys && cd generate_keys && cp ../mkkeys.sh . && ./mkkeys.sh
 
-## Signing UEFI application:
+## Signing a UEFI application:
 # before running the following line (from install.sh)
 dracut --force  -c ./dracut.module/dracut.conf --confdir dracut_tmp
 # put the following from the signing key in /etc/uefi-key/