Added/updated snippets for docs (#2318)

docs/doc_examples/2ee239df3243c98418f7d9a5c7be4cfd.asciidoc

@@ -0,0 +1,27 @@
+// 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.create({
+  index: "my-index-000001",
+  settings: {
+    analysis: {
+      analyzer: {
+        my_custom_index_analyzer: {
+          type: "custom",
+          tokenizer: "standard",
+          filter: ["my_custom_word_delimiter_graph_filter", "flatten_graph"],
+        },
+      },
+      filter: {
+        my_custom_word_delimiter_graph_filter: {
+          type: "word_delimiter_graph",
+          catenate_all: true,
+        },
+      },
+    },
+  },
+});
+console.log(response);
+----