Update targetconfig.json

[galbatoriz]

Added Extension https://github.com/Zukunftswerkstatt-Buchholz/robot-control

[galbatoriz]

Hi :) Are there any remaining concerns with the pull request that I can address?

[Amerlander]

            }
            "Zukunftswerkstatt-Buchholz/robot-control": {
                "tags": [
                    "Motor"
                ],
                "preferred": true
            },
        },      

has to be changed to:

            },
            "zukunftswerkstatt-buchholz/robot-control": {
                "tags": [
                    "Motor"
                ],
                "preferred": true
            }
        },    

@joernalraun should this extension be "preferred": true?

[galbatoriz]

Thank you for the feedback :)