message: style(docs): top menu position: fixed on external resources page
  Top menu had position: absolute what was leading to its disappearing on scrolling
diff: @@ -38,8 +38,7 @@ aio-shell.page-home mat-toolbar.mat-toolbar {
  // MARKETING PAGES OVERRIDE: TOPNAV TOOLBAR AND HAMBURGER
  aio-shell.page-home mat-toolbar.mat-toolbar,
  aio-shell.page-features mat-toolbar.mat-toolbar,
  -aio-shell.page-events mat-toolbar.mat-toolbar,
  -aio-shell.page-resources mat-toolbar.mat-toolbar {
  +aio-shell.page-events mat-toolbar.mat-toolbar {
  box-shadow: none;
  // FIXED TOPNAV TOOLBAR FOR SMALL MOBILE
  