Update README.md

Author: ThibDev

README.md

@@ -7,7 +7,7 @@ With Qt5.x, The window should have the same look on all OS
 bash for the postinst script
 
 ## Install
-1. move into the package folder
+1. move into the folder `package`
 2. Use the package manager or write in the shell>  
 `sudo dpkg -i regexp_testor.deb` or `sudo gdebi regexp_testor.deb`