fix missing 's'
fix missing 's'

charybdeBE/Cytomine-core,cytomine/Cytomine-core,charybdeBE/Cytomine-core,cytomine/Cytomine-core,charybdeBE/Cytomine-core,cytomine/Cytomine-core,charybdeBE/Cytomine-core,cytomine/Cytomine-core,cytomine/Cytomine-core,cytomine/Cytomine-core,charybdeBE/Cytomine-core,charybdeBE/Cytomine-core,charybdeBE/Cytomine-core,charybdeBE/Cytomine-core,charybdeBE/Cytomine-core,charybdeBE/Cytomine-core