package/ssdp-responder: fix CPE variables
cpe:2.3:a:simple_service_discovery_protocol_responder_project:simple_service_discovery_protocol_responder
is a valid CPE identifier for this package:
https://nvd.nist.gov/products/cpe/search/results?namingFormat=2.3&keyword=cpe%3A2.3%3Aa%3Asimple_service_discovery_protocol_responder_project%3Asimple_service_discovery_protocol_responder
Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>