chore: typo in 2016-10-31.md (#979)

Author: oltruong

.github/PULL_REQUEST_TEMPLATE.md

@@ -9,6 +9,8 @@
 - [ ] Write/update tests
 - [ ] `make pr` passes
 - [ ] Update documentation
+- [ ] Verify transformed template deploys and application functions as expected
+- [ ] Add/update example to `examples/2016-10-31`
 
 
 By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

versions/2016-10-31.md

@@ -728,7 +728,7 @@ Location: # Both parameters are required
 ```
 
 #### DeadLetterQueue Object
-Specifies an SQS queue or SNS topic that AWS Lambda (Lambda) sends events to when it can't process them. For more information about DLQ functionality, refer to the officiall documentation at http://docs.aws.amazon.com/lambda/latest/dg/dlq.html. SAM will automatically add appropriate permission to your Lambda function execution role to give Lambda service access to the resource. `sqs:SendMessage` will be added for SQS queues and `sns:Publish` for SNS topics.
+Specifies an SQS queue or SNS topic that AWS Lambda (Lambda) sends events to when it can't process them. For more information about DLQ functionality, refer to the official documentation at http://docs.aws.amazon.com/lambda/latest/dg/dlq.html. SAM will automatically add appropriate permission to your Lambda function execution role to give Lambda service access to the resource. `sqs:SendMessage` will be added for SQS queues and `sns:Publish` for SNS topics.
 
 Syntax: