Update routes.js (#25628)

Added redirect to Apple Business Manager apps and books page.

website/config/routes.js

@@ -783,6 +783,7 @@ module.exports.routes = {
   // =============================================================================================================
   // Redirects for external links from the Fleet UI & CLI, including to fleetdm.com and to external websites not
   // maintained by Fleet. These help avoid broken links by reducing surface area of links to maintain in the UI.
+  'GET /learn-more-about/abm-apps': 'https://business.apple.com/#/main/appsandbooks',
   'GET /learn-more-about/chromeos-updates': 'https://support.google.com/chrome/a/answer/6220366',
   'GET /learn-more-about/just-in-time-provisioning': '/docs/deploy/single-sign-on-sso#just-in-time-jit-user-provisioning',
   'GET /learn-more-about/os-updates': '/docs/using-fleet/mdm-os-updates',