Fix debug arg explanation

Closes #369

Author: dhinakg

troubleshooting/kernel-debugging.md

@@ -56,8 +56,8 @@ Now lets go over what each arg does:
 * **keepsyms=1**
   * Ensures symbols are kept during kernel panics, which are greatly helpful for troubleshooting
 * **debug=0x12a**
-  * Combination of `DB_KPRT`(0x8), `DB_KDP_BP_DIS`(0x32), `DB_KDP_GETC_ENA(0x200)`
-  * A full list of values can be found here: [debug.h](https://github.com/apple/darwin-xnu/blob/master/osfmk/kern/debug.h#L419L447)
+  * Combination of `DB_PRT` (0x2), `DB_KPRT` (0x8), `DB_SLOG` (0x20), and `DB_LOG_PI_SCRN` (0x100)
+  * A full list of values for the latest version of XNU can be found here: [debug.h](https://github.com/apple-oss-distributions/xnu/blob/master/osfmk/kern/debug.h)
 * **msgbuf=1048576**
   * Sets the kernel's message buffer size, this helps with getting proper logs during boot
   * 1048576 is 1MB(/1024^2), can be larger if required