rename zImage to something more specific

documentation.txt

@@ -82,11 +82,11 @@ charger software time to shut down.  Don't connect it to the PC just yet.
 Startup the flasher and get it ready to load RescueOS.  For 0xFFFF, the
 incantation is:
 
-  0xFFFF -m kernel:zImage -m initfs:rescueOS-1.2.img -l -b 'rootdelay root=/dev/ram0'
+  0xFFFF -m kernel:rescueOS_n900_kernel_1.2.zImage -m initfs:rescueOS-1.2.img -l -b 'rootdelay root=/dev/ram0'
 
 For maemo_flasher, it's:
 
-  flasher-3.5 -k zImage -n rescueOS-1.2.img -l -b"rootdelay root=/dev/ram0"
+  flasher-3.5 -k rescueOS_n900_kernel_1.2.zImage -n rescueOS-1.2.img -l -b"rootdelay root=/dev/ram0"
 
 You'll get a message like "suitable device not found...", but the flasher
 should block and wait.  Now connect the N900 to the PC with the data cable; the