ktest.pl: Fix typo "accesing"

There is a spelling mistake of 'accesing' in comments which should
be 'accessing'.

Fixes: 6d76f46 ("ktest: Add useful example configs")
Link: https://lore.kernel.org/8714AE3735C0EA0B+20241218140437.194906-1-wangyuli@uniontech.com
Reviewed-by: SeongJae Park <sj@kernel.org>
Signed-off-by: WangYuli <wangyuli@uniontech.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>

Author: WangYuli

tools/testing/ktest/examples/include/defaults.conf

@@ -46,7 +46,7 @@ CLEAR_LOG = 1
 
 SSH_USER = root
 
-# For accesing the machine, we will ssh to root@machine.
+# For accessing the machine, we will ssh to root@machine.
 SSH := ssh ${SSH_USER}@${MACHINE}
 
 # Update this. The default here is ktest will ssh to the target box