pm-graph: Fix typo "accesible"

Trivial fix.

Signed-off-by: Ricardo Ribalda <[e-mail]>
Signed-off-by: Rafael J. Wysocki <[e-mail]>

tools/power/pm-graph/sleepgraph.py

···
 			sysvals.outdir = val
 			sysvals.notestrun = True
 			if(os.path.isdir(val) == False):
-				doError('%s is not accesible' % val)
+				doError('%s is not accessible' % val)
 		elif(arg == '-filter'):
 			try:
 				val = next(args)