Dynamic threshold example fix (Azure#10362)

Fix Dynamic threshold example for criteria creation

Author: meday89

src/Monitor/Monitor/help/New-AzMetricAlertRuleV2Criteria.md

@@ -53,7 +53,7 @@ This command creates a simple metric alert criteria that can be used in a metric
 ### Example 2: Create a dynamic metric alert criteria
 
 ```powershell
-PS C:\>New-AzMetricAlertRuleV2Criteria -Dynamic -MetricName "Percentage CPU" -MetricNameSpace "Microsoft.Compute/virtualMachines" -TimeAggregation Average -Operator GreaterThan -ThresholdSensitivity Medium -NumberOfViolations 2 -NumberOfExaminedAggregatedPoints 4
+PS C:\>New-AzMetricAlertRuleV2Criteria -Dynamic -MetricName "Percentage CPU" -MetricNameSpace "Microsoft.Compute/virtualMachines" -TimeAggregation Average -Operator GreaterThan -ThresholdSensitivity Medium -ViolationCount 2 -ExaminedAggregatedPointCount 4
 CriterionType        : DynamicThresholdCriterion
 OperatorProperty     : GreaterThan
 AlertSensitivity     : Medium