fix pae kernel reference

Reference: /n/atom/patch/applied/inst64paed
Date: Thu Feb 27 23:33:57 CET 2014
Signed-off-by: quanstro@quanstro.net

--- /sys/lib/dist/amd64/9fat/plan9.ini	Thu Feb 27 23:33:35 2014
+++ /sys/lib/dist/amd64/9fat/plan9.ini	Thu Feb 27 23:33:35 2014
@@ -7,7 +7,7 @@
 bootfile=9termd
 
 [386pae]
-bootfile=9pae
+bootfile=9paed
 
 [common]
 bootargs=local!#S/sdu0/fs -B 10000