AWS Security Token Service Update: Documentation updates for AWS Security Token Service.

Author: AWS

.changes/next-release/feature-AWSSecurityTokenService-97df293.json

@@ -0,0 +1,6 @@
+{
+    "type": "feature",
+    "category": "AWS Security Token Service",
+    "contributor": "",
+    "description": "Documentation updates for AWS Security Token Service."
+}