pm-graph: Fix typo "accesible"

Trivial fix.

Signed-off-by: Ricardo Ribalda <ribalda@chromium.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

Author: ribalda

tools/power/pm-graph/sleepgraph.py

@@ -6819,7 +6819,7 @@ def printHelp():
 			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)