Fix reference from semantics section to domain model actions
In section 10.6.3. "Actions" it says
The semantics of the domain model actions are described in … TODO reference Domain Model chapter → Actions section.
First, the correct reference is missing here technically.
Second, it should be clarified that for OSC2.0 no formal semantics for DM actions are given e.g. there is currently no formal definition of semantics of the "drive" action but just an informal description what it means.