chore: fix reporisotry name

packages/backend/src/models/entities/RegistrationTicket.ts

@@ -0,0 +1,17 @@
+import { PrimaryColumn, Entity, Index, Column } from 'typeorm';
+import { id } from '../id.js';
+
+@Entity()
+export class RegistrationTicket {
+	@PrimaryColumn(id())
+	public id: string;
+
+	@Column('timestamp with time zone')
+	public createdAt: Date;
+
+	@Index({ unique: true })
+	@Column('varchar', {
+		length: 64,
+	})
+	public code: string;
+}