Merge pull request serverless#4308 from sime/dlq-sqs-typo

SQS queue, not SNS queue

docs/providers/aws/guide/functions.md

@@ -305,7 +305,7 @@ These versions are not cleaned up by serverless, so make sure you use a plugin o
 
 ## Dead Letter Queue (DLQ)
 
-When AWS lambda functions fail, they are [retried](http://docs.aws.amazon.com/lambda/latest/dg/retries-on-errors.html). If the retries also fail, AWS has a feature to send information about the failed request to a SNS topic or SNS queue, called the [Dead Letter Queue](http://docs.aws.amazon.com/lambda/latest/dg/dlq.html), which you can use to track and diagnose and react to lambda failures.
+When AWS lambda functions fail, they are [retried](http://docs.aws.amazon.com/lambda/latest/dg/retries-on-errors.html). If the retries also fail, AWS has a feature to send information about the failed request to a SNS topic or SQS queue, called the [Dead Letter Queue](http://docs.aws.amazon.com/lambda/latest/dg/dlq.html), which you can use to track and diagnose and react to lambda failures.
 
 You can setup a dead letter queue for your serverless functions with the help of a SNS topic and the `onError` config parameter.