fix alarm metric

Signed-off-by: Dev Singh <[email protected]>

Author: devksingh4

cloudformation/main.yml

@@ -407,7 +407,7 @@ Resources:
       AlarmDescription: 'Items are present in the application DLQ, meaning some messages failed to process.'
       Namespace: 'AWS/SQS'
       MetricName: 'ApproximateNumberOfMessagesVisible'
-      Statistic: 'SUM'
+      Statistic: 'Sum'
       Period: '60'
       EvaluationPeriods: '1'
       ComparisonOperator: 'GreaterThanThreshold'