Explicitly mention 6.x kernels

Author: jserv

README.md

@@ -1,6 +1,6 @@
 # The Linux Kernel Module Programming Guide
 
-This project keeps the Linux Kernel Module Programming Guide up to date, with [working examples](examples/) for recent 5.x kernel versions.
+This project keeps the Linux Kernel Module Programming Guide up to date, with [working examples](examples/) for recent 5.x and 6.x kernel versions.
 The guide has been around since 2001 and most copies of it on the web only describe old 2.6.x kernels.
 
 The book can be freely accessed via https://sysprog21.github.io/lkmpg/ or [latest PDF file](https://github.com/sysprog21/lkmpg/releases).