logging/log: Remove incorrect description in PCV doc comment

PCV isn't the parental control service.

src/common/logging/log.h

@@ -77,7 +77,7 @@ enum class Class : ClassType {
     Service_NVDRV,     ///< The NVDRV (Nvidia driver) service
     Service_PCIE,      ///< The PCIe service
     Service_PCTL,      ///< The PCTL (Parental control) service
-    Service_PCV,       ///< The PCV (Parental control) service
+    Service_PCV,       ///< The PCV service
     Service_PREPO,     ///< The PREPO (Play report) service
     Service_PSC,       ///< The PSC service
     Service_SET,       ///< The SET (Settings) service