Added/updated snippets for docs (#2318)

docs/doc_examples/0adbce828234ca221e3d03b184296407.asciidoc

@@ -0,0 +1,17 @@
+// 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.indices.putMapping({
+  index: "my-index",
+  runtime: {
+    "http.clientip": {
+      type: "ip",
+      script:
+        "\n        String clientip=grok('%{COMMONAPACHELOG}').extract(doc[\"message\"].value)?.clientip;\n        if (clientip != null) emit(clientip); \n      ",
+    },
+  },
+});
+console.log(response);
+----