message: docs(manual-schema-modification): fix wrong variable use
  There was an error in line `const CatModelRaw = mongoose.model(getName(Cat), Cat);`. We should pass `CatSchema` instead of `Cat`.
diff: @@ -25,7 +25,7 @@ const CatSchema = buildSchema(Cat);
  CatSchema.virtual("getName").get(function() { return this.name });
  // The Schema will have to be manually made into a model
  -const CatModelRaw = mongoose.model(getName(Cat), Cat);
  +const CatModelRaw = mongoose.model(getName(Cat), CatSchema);
  // And finally the model will get added to the typegoose cache with the class and also have proper types
  // essentially "addModelToTypegoose" re-exports the input model, but cast as the correct typegoose type
  