Update README.md

Author: xcorail

README.md

@@ -1,7 +1,7 @@
-# U-Boot challenge CodeQL course
+# Your GitHub repository for your course "CodeQL U-Boot challenge (C/C++)
 
 **Welcome to this course!** You will navigate through the different steps
 by following the instructions given to you in each new issue created in this project,
-that you will answer to, by creating Pull requests on this project.
+that you will answer to, by writing and committing CodeQL queries on this project.
 
-Let's start right away, by going to the [first issue](#1)! 
+Let's start right away, by going to the [first issue](#1)!