Fix terraform

Author: stevebux

infrastructure/terraform/components/api/kinesis_letter_change_stream.tf

@@ -7,5 +7,5 @@ resource "aws_kinesis_stream" "letter_change_stream" {
 resource "aws_dynamodb_kinesis_streaming_destination" "letter_streaming_destination" {
   stream_arn                               = aws_kinesis_stream.letter_change_stream.arn
   table_name                               = aws_dynamodb_table.letters.name
-  approximate_creation_date_time_precision = "MILLSECOND"
+  approximate_creation_date_time_precision = "MILLISECOND"
 }