Fixed typo

models/participant.go

@@ -23,7 +23,7 @@ type DBParticipant struct {
 	WrapupRequired                   *bool
 
 	Sessions []DBSession `gorm:"foreignKey:ParticipantId;references:Id"`
-	Calls    []DBCall    `gorm:"foreignKey:ParticipantId;referencesId`
+	Calls    []DBCall    `gorm:"foreignKey:ParticipantId;references:Id"`
 	User     GCUser      `gorm:"foreignKey:UserId;references:Id`
 }