Add v5.2.0-beta1 docs (#36338)

docs/5.2/examples/sidebars/sidebars.js

@@ -0,0 +1,8 @@
+/* global bootstrap: false */
+(() => {
+  'use strict'
+  const tooltipTriggerList = Array.from(document.querySelectorAll('[data-bs-toggle="tooltip"]'))
+  tooltipTriggerList.forEach(tooltipTriggerEl => {
+    new bootstrap.Tooltip(tooltipTriggerEl)
+  })
+})()