Added/updated snippets for docs (#2318)

docs/doc_examples/083e514297c09e91211f0d168aef1b0b.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.updateByQuery({
+  index: "logs-generic-default",
+  query: {
+    match: {
+      "event.sequence": "97",
+    },
+  },
+  script: {
+    source: "ctx._source.event.original = params.new_event",
+    lang: "painless",
+    params: {
+      new_event: "FOOBAR",
+    },
+  },
+});
+console.log(response);
+----