README.md in elastic-apm-4.6.2

- old
+ new

@@ -10,10 +10,10 @@
   ./run.sh --action build
 ```
 
 You can set your own docker registry with the flag `--registry x.y.z/org`
 
-You can exclude what images can be built with the flag `--exclude jdk-7`
+You can exclude what images can be built with the flag `--exclude jdk-7`. Multiple usages of `--exclude` are accepted.
 
 ## Test
 
 To test the images run
 