Added/updated snippets for docs (#2318)

docs/doc_examples/77828fcaecc3f058c48b955928198ff6.asciidoc

@@ -0,0 +1,31 @@
+// 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.ingest.simulate({
+  pipeline: {
+    description: "parse multiple patterns",
+    processors: [
+      {
+        grok: {
+          field: "message",
+          patterns: ["%{FAVORITE_DOG:pet}", "%{FAVORITE_CAT:pet}"],
+          pattern_definitions: {
+            FAVORITE_DOG: "beagle",
+            FAVORITE_CAT: "burmese",
+          },
+        },
+      },
+    ],
+  },
+  docs: [
+    {
+      _source: {
+        message: "I love burmese cats!",
+      },
+    },
+  ],
+});
+console.log(response);
+----