fix package names in README

README.md

@@ -87,14 +87,15 @@ etsi_its_messages
 │   ├── etsi_its_msgs           # metapackage including all msg packages
 │   ├── etsi_its_cam_msgs
 │   └── etsi_its_denm_msgs
+├── etsi_its_msgs_utils
 └── etsi_its_rviz_plugins
 ```
 
 ### `etsi_its_msgs`
 
 The `etsi_its_msgs` metapackage includes one dedicated package for each ETSI ITS message type, e.g., `etsi_its_cam_msgs`. These packages define the ROS message equivalents to the ETSI ITS message types, e.g., [`etsi_its_cam_msgs/msg/CAM`](etsi_its_msgs/etsi_its_cam_msgs/msg/CAM-PDU-Descriptions/CAM.msg).
 
-In addition, the `etsi_its_msgs` contains header-only libraries providing helpful access functions for modifying the deeply nested ROS messages.
+In addition, the `etsi_its_msgs_utils` package contains header-only libraries providing helpful access functions for modifying the deeply nested ROS messages.
 
 #### Automated Generation
 
@@ -110,7 +111,7 @@ The ROS message files are auto-generated based on the [ASN.1 definitions](https:
 
 #### Access Functions Documentation
 
-[Click here](https://ika-rwth-aachen.github.io/etsi_its_messages) to be taken to the API documentation for the implemented access functions.
+The access functions implemented in the `etsi_its_msgs_utils` package are documented [here](https://ika-rwth-aachen.github.io/etsi_its_messages).
 
 The documentation can be generated by running [Doxygen](https://doxygen.nl/).