Use jsdoc/multiline-blocks instead of multiline-comment-style

Replace multiline-comment-style (starred-block), which also forces
multiline // comments into block comments, with jsdoc/multiline-blocks.
That rule only enforces starred JSDoc layout for /** blocks (no text on
the opening line) and leaves multiline // comments unchanged for
internal documentation.

Fix multiline JSDoc in Types.ts.

Fixes #5899

Co-authored-by: Daniel Imms <Tyriar@users.noreply.github.com>

src/browser/decorations/OverviewRulerRenderer.ts

@@ -1,9 +1,7 @@
-/*
- *---------------------------------------------------------------------------------------------
+/*---------------------------------------------------------------------------------------------
  *  Copyright (c) Microsoft Corporation. All rights reserved.
  *  Licensed under the MIT License. See License.txt in the project root for license information.
- *--------------------------------------------------------------------------------------------
- */
+ *--------------------------------------------------------------------------------------------*/
 
 import { ColorZoneStore, IColorZone, IColorZoneStore } from 'browser/decorations/ColorZoneStore';
 import { ICoreBrowserService, IRenderService, IThemeService } from 'browser/services/Services';
@@ -14,10 +12,8 @@ const enum Constants {
   OVERVIEW_RULER_BORDER_WIDTH = 1
 }
 
-/*
- * Helper objects to avoid excessive calculation and garbage collection during rendering. These are
- * static values for each render and can be accessed using the decoration position as the key.
- */
+// Helper objects to avoid excessive calculation and garbage collection during rendering. These are
+// static values for each render and can be accessed using the decoration position as the key.
 const drawHeight = {
   full: 0,
   left: 0,