Update readme.adoc example to use R option with wrk2

readme.adoc

@@ -9,7 +9,7 @@ To use the scripts from this catalog you need to have [JBang](https://www.jbang.
 Example of running the 'wrk2' is as follows:
 
 ```shell
-jbang wrk2@hyperfoil -t2 -c100 -d30s --latency http://localhost:8080
+jbang wrk2@hyperfoil -t2 -c100 -d30s -R100 --latency http://localhost:8080
 ```
 
 To list all the available scripts in the catalog you can use the following command: