message: docs(hooks): add note that decorators need to be imported
  This is a squash merge of typegoose/typegoose#416
diff: @@ -3,6 +3,14 @@ id: hooks
  title: 'Hooks'
  ---
  +> Don't forget to import these hooks with:
  +
  +```ts
  +import { pre, post } from '@typegoose/typegoose';
  +```
  +
  +---
  +
  ## @pre
  `@pre<T>(name: string | string[] | regexp | regexp[], method: () => any)` is used to set Pre-Hooks
  @@ -48,3 +56,5 @@ class Car {
  public topSpeedInKmH!: number;
  }
  ```
  +
  +
  