message: docs(non-nested-discriminators): fix example
diff: @@ -30,9 +30,15 @@ class Cat extends Animal {
  public nameTag!: string;
  }
  +class Parrot extends Animal {
  + @prop()
  + public commonMessage?: string;
  +}
  +
  const AnimalModel = getModelForClass(Animal);
  const DogModel = getModelForClass(Dog);
  const CatModel = getModelForClass(Cat);
  +const ParrotModel = getModelForClass(Parrot);
  ```
  and then in some querying code:
  @@ -41,10 +47,10 @@ and then in some querying code:
  await CatModel.create({ patientNumber: 0, nameTag: "Catty-1" });
  await DogModel.create({ patientNumber: 1, cageNumber: 1 });
  -// for this example its an "findOne" to lower the example code
  +// for this example its a "findOne" to lower the example code
  const found = await ParrotModel.findOne({}).exec();
  -// this will find should log one of the 2 created above
  +// this will "find" should log one of the 2 created above
  console.log("found", found);
  ```
  