Updated Amazon S3 API (markdown)

Amazon-S3-API.md

@@ -56,6 +56,8 @@ You can create as many users as needed. Each user can have multiple credentials.
 * The "Write:<bucket_name>" action allows uploading files within a bucket, e.g., "Write:bucket1".
 * The "Read:<bucket_name>" action allows reading and listing files within a bucket, e.g., "Read:bucket2".
 
+For public access, you can configure an identity with name "anonymous", usually with just "Read" action, or access to specific buckets.
+
 ```
 {
   "identities": [