GH-671 - Additional deprecation notice in event externalization section of reference docs.

Author: odrotbohm

src/docs/antora/modules/ROOT/pages/events.adoc

@@ -368,13 +368,13 @@ Does not support routing keys.
 
 |SQS
 |`spring-modulith-events-aws-sqs`
-|Uses Spring Cloud AWS SQS support.
+|Deprecated (details xref:appendix.adoc#deprecated-modules[here]). Uses Spring Cloud AWS SQS support.
 The logical routing key will be used as SQS message group id.
 When routing key is set, requires SQS queue to be configured as a FIFO queue.
 
 |SNS
 |`spring-modulith-events-aws-sns`
-|Uses Spring Cloud AWS SNS support.
+|Deprecated (details xref:appendix.adoc#deprecated-modules[here]). Uses Spring Cloud AWS SNS support.
 The logical routing key will be used as SNS message group id.
 When routing key is set, requires SNS to be configured as a FIFO topic with content based deduplication enabled.