message: Update src/martixBase.ts
diff: @@ -276,7 +276,7 @@ export class QuestionMatrixBaseModel<TRow, TColumn> extends Question {
  }
  /**
  - * Aligns matrix cell contents in the vertical direction.
  + * Aligns matrix cell content in the vertical direction.
  */
  @property({ defaultValue: "middle" }) verticalAlign: "top" | "middle";
  