fix: add missing comma in sgx_default_qcnl_intelpcs.conf

Author: hyperfinitism

QuoteGeneration/qcnl/linux/sgx_default_qcnl_intelpcs.conf

@@ -10,7 +10,7 @@
   // To accept insecure HTTPS certificate, set this option to false
   "use_secure_cert": true,
 
-  "collateral_service": "https://api.trustedservices.intel.com/sgx/certification/v4/"
+  "collateral_service": "https://api.trustedservices.intel.com/sgx/certification/v4/",
 
   "retry_times": 6,