[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/40b73b5c7ca144dc3f63f5b741f33d80.asciidoc

@@ -0,0 +1,22 @@
+// 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.search({
+  index: "my-index-000001",
+  query: {
+    constant_score: {
+      filter: {
+        percolate: {
+          field: "query",
+          document: {
+            message: "A new bonsai tree in the office",
+          },
+        },
+      },
+    },
+  },
+});
+console.log(response);
+----