PreemptionToleration: fix typo in high priority

kep/205-preemption-toleration/README.md

@@ -66,7 +66,7 @@ For example, cluster administrator would introduce several priority classes with
 
 ```yaml
         system-critical: 10000  # system-critical can preempt pods in low-non-preempted-{10,30}min priority immediately
-                   high:  8000  # high can preempt pods in low-non-preempted-{10,30}min priority class which elapsed at least {10,30} minutes.
+                   high:  9000  # high can preempt pods in low-non-preempted-{10,30}min priority class which elapsed at least {10,30} minutes.
                     low:  8000  # no minimum running time guarantee
 low-non-preempted-10min:  8000  # 10 min minimum running time guarantee against 8000 < p < 10000
 low-non-preempted-30min:  8000  # 30 min minimum running time guarantee against 8000 < p < 10000