message: docs(getModelWithString): re-style and update to current implementation
diff: @@ -3,7 +3,23 @@ id: get-model-with-string
  title: 'getModelWithString'
  ---
  -`getModelWithString(key)` retrieves a model with the given key. If no Mongoose model exists in Typegoose's internal cache, it will return `undefined`.
  +**Typings:**
  +
  +```ts
  +function getModelWithString<U extends AnyParamConstructor<any>, QueryHelpers = BeAnObject>(
  + key: string
  +): undefined | ReturnModelType<U, QueryHelpers>
  +```
  +
  +**Parameters:**
  +
  +| Name | Type | Description |
  +| :--------------------------------------------------------- | :------: | :---------------------------------------------- |
  +| `key` <span class="badge badge--secondary">Required</span> | `string` | Get a Model from Cache by the name of the model |
  +
  +`getModelWithString` tries to find the given key in the Typegoose Model Cache and return the Model.
  +
  +Similar to [`getClass`](./getClass.md), only that this function currently directly requires the key.
  ## Example
  @@ -19,4 +35,8 @@ const KittenModelNew = getModelWithString(KittenModel.modelName);
  // OR with the internal utils.getName(class)
  const KittenModelNew = getModelWithString(utils.getName(Kitten));
  // BUT when you have the class at your disposal, you should use "getModelForClass" - it will return the already compiled model
  +// also possible is to use "getClass" to get the class from something like a document, but it would be better to directly get the model from the document
  +const KittenModelNew = getModelWithString(getClass(somedocument) ?? "");
  +// instead of using a document it is recommended to directly get the model with
  +somedocument.$model;
  ```
  