message: Update verticalAlign and alternateRows property descriptions
diff: @@ -275,7 +275,14 @@ export class QuestionMatrixBaseModel<TRow, TColumn> extends Question {
  .append(this.cssClasses.rootVerticalAlignMiddle, (this.verticalAlign === "middle")).toString();
  }
  + /**
  + * Aligns matrix cell contents in the vertical direction.
  + */
  @property({ defaultValue: "middle" }) verticalAlign: "top" | "middle";
  +
  + /**
  + * Specifies whether to apply shading to alternate matrix rows.
  + */
  @property({ defaultValue: false }) alternateRows: boolean;
  }
  @@ -290,7 +297,7 @@ Serializer.addClass(
  choices: ["top", "middle"],
  default: "middle",
  },
  - "alternateRows:boolean",
  + { name: "alternateRows:boolean", default: false }
  ],
  undefined,
  "question"
  