Update examples/basic/kernel/basic-kernel.md

Co-authored-by: Tom Dohrmann <Erbse.13@gmx.de>

Author: peppergrayxyz

examples/basic/kernel/basic-kernel.md

@@ -7,5 +7,3 @@ The kernel:
 - Dumps the [`boot_info`](/api/src/info.rs) it received from `bootloader`
 - Prints a message
 - Exits QEMU with a custom exit code via the `isa-debug-exit` device
-
-Check https://os.phil-opp.com/ for further information on how to write an OS in Rust.