message: fixed underline (Issue
diff: * AUTH: Brent Ely (https://github.com/gitbrent/)
  * DESC: Common test/demo slides for all library features
  * DEPS: Used by various demos (./demos/browser, ./demos/node, etc.)
  - * VER.: 3.7.2
  - * BLD.: 20210807
  + * VER.: 3.10.0
  + * BLD.: 20220220
  */
  import {
  @@ -101,7 +101,7 @@ function genSlide01(pptx) {
  ],
  [
  { text: "Bold", options: { fill: { color: "003366" }, bold: true } },
  - { text: "Underline", options: { fill: { color: "336699" }, underline: true } },
  + { text: "Underline", options: { fill: { color: "336699" }, underline: { style: "sng" } } },
  { text: "0.15 margin", options: { fill: { color: "6699CC" }, margin: 0.15 } },
  ],
  ];
  