Fix latest plugin version

Author: dadoonet

README.md

@@ -7,7 +7,7 @@ for the unicast discovery mechanism and add S3 repositories.
 In order to install the plugin, run: 
 
 ```sh
-bin/plugin install elasticsearch/elasticsearch-cloud-aws/2.4.0
+bin/plugin install elasticsearch/elasticsearch-cloud-aws/2.4.1
 ```
 
 You need to install a version matching your Elasticsearch version: