fix: typo on install instructions

Author: 24mu13

install-linux.txt

@@ -6,8 +6,8 @@ apt-get install build-essential libusb-dev bzip2
 
 Then cd into the directory of the extracted source and execute the command:
 
-make -f Makefile.freebsd
+make -f Makefile.linux
 
 To build the GUI, make sure the package gnome-devel is installed, build the CLI and then execute the command:
 
-./linuxgui.sh
+./linuxgui.sh