fix order number in refferal hospital

src/entity/refferal_hospital.ts

@@ -13,7 +13,7 @@ export class RefferalHospital {
   id!: string;
 
   @Column({ type: "number", nullable: true })
-  order_number: number;
+  order_number: string;
 
   @Column({ type: "text", nullable: false })
   refferal_hospital_name!: string;