Added/updated snippets for docs (#2318)

docs/doc_examples/be285eef1d2df0dfcf876e2d4b361f1e.asciidoc

@@ -0,0 +1,28 @@
+// 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: "common_grams_example",
+  settings: {
+    analysis: {
+      analyzer: {
+        index_grams: {
+          tokenizer: "whitespace",
+          filter: ["common_grams_query"],
+        },
+      },
+      filter: {
+        common_grams_query: {
+          type: "common_grams",
+          common_words: ["a", "is", "the"],
+          ignore_case: true,
+          query_mode: true,
+        },
+      },
+    },
+  },
+});
+console.log(response);
+----