Timestamp incorrectly set in Write-LogsEntry example

[0pierri]

Using ToUniversalTime() results in an incorrect timestamp as the UTC conversion is repeated when the event is marshalled:

https://github.com/aws/aws-sdk-net/blob/0fb3f01067713d215363ec098a92d3ee05898434/sdk/src/Core/Amazon.Runtime/Internal/Transform/CustomMarshallTransformations.cs#L12

quickstart-examples/samples/ec2-instance-userdata/ec2InstanceUserData.yaml

Line 91 in 106a43a

$logEntry.Timestamp = (Get-Date).ToUniversalTime()

This isn't too obvious from the docs, perhaps it could also be clarified there?