message: reorder doc site
diff: "sponsoredByLogo": "landing-page/assets/assets_bentley.svg",
  "favicon": "overview/imodeljs.ico",
  "docSiteOrder": [
  + "landing-page",
  "overview",
  "getting-started",
  - "landing-page",
  "learning",
  "bis",
  "reference"
  