Amazon CloudWatch Update: Doc-only update to correct alarm actions list

Author: AWS

.changes/next-release/feature-AmazonCloudWatch-2e7f218.json

@@ -0,0 +1,6 @@
+{
+    "type": "feature",
+    "category": "Amazon CloudWatch",
+    "contributor": "",
+    "description": "Doc-only update to correct alarm actions list"
+}