[Backport 8.15] Added/updated snippets for docs (#2319)

(cherry picked from commit f737290d10)

Co-authored-by: Josh Mock <joshua.mock@elastic.co>

docs/doc_examples/a3d943ac9d45b4eff4aa0c679b4eceb3.asciidoc

@@ -0,0 +1,11 @@
+// This file is autogenerated, DO NOT EDIT
+// Use `node scripts/generate-docs-examples.js` to generate the docs examples
+
+[source, js]
+----
+const response = await client.danglingIndices.importDanglingIndex({
+  index_uuid: "<index-uuid>",
+  accept_data_loss: "true",
+});
+console.log(response);
+----