Update action-mapper.md

small typo
diff --git a/source/core-developers/action-mapper.md b/source/core-developers/action-mapper.md
index c42aae9..b0b26fb 100644
--- a/source/core-developers/action-mapper.md
+++ b/source/core-developers/action-mapper.md
@@ -143,7 +143,7 @@
 ```
 
 `CompositeActionMapper` will be configured with 2 ActionMapper, namely "struts" which is `org.apache.struts2.dispatcher.mapper.DefaultActionMapper`
-and "restful" which is `org.apache.struts2.dispatcher.mapper.RestfulActionMapperRestfulActionMapper`. 
+and "restful" which is `org.apache.struts2.dispatcher.mapper.RestfulActionMapper`. 
 
 `CompositeActionMapper` would consult each of them in order described above.