message: update mock vscode api with the latest descriptions
diff: @@ -247,7 +247,7 @@ const mockVsCodeApi = () => ({
  name: "Grid",
  defaultName: "Grid",
  description:
  - "A page displaying simple image and text components which are organized into a grid.",
  + "Simple image and text components which are organized into a grid.",
  richDescription:
  "A page displaying simple image and text components which are organized into a grid. Grid pages are a system for creating order among elements in a website.",
  author: "Microsoft",
  @@ -275,8 +275,7 @@ const mockVsCodeApi = () => ({
  emplateId: "wts.Page.React.List",
  name: "List",
  defaultName: "List",
  - description:
  - "The list page allows you to add and remove text from an adaptive list.",
  + description: "Add and remove text from an adaptive list.",
  richDescription:
  "The list page allows you to add custom text in the form of an adaptive list. This pattern is frequently used for blog pages and messaging apps. If a database is selected from the Azure Cloud Services the list page will automatically connect to the deployed Azure database.",
  author: "Microsoft",
  @@ -305,7 +304,7 @@ const mockVsCodeApi = () => ({
  name: "Master Detail",
  defaultName: "Master Detail",
  description:
  - "The master-detail page has a master pane and a details pane for content.",
  + "A master pane and a details pane for content.",
  richDescription:
  "The master-detail page has a master pane and a details pane for content. When an item in the master list is selected, the details pane is updated. This pattern is frequently used for email and address books.",
  author: "Microsoft",
  