Update src/tools/parameter-server.cpp
Update src/tools/parameter-server.cpp

Update warning msgs

Co-authored-by: Guilhem Saurel <dcbd73b3198b13c1fb890f63ec344ca6defbe1aa@laas.fr>
stack-of-tasks/sot-core,stack-of-tasks/sot-core,stack-of-tasks/sot-core