Added/updated snippets for docs (#2318)

docs/doc_examples/a5b59f0170a2feaa39e40243fd7ae359.asciidoc

@@ -0,0 +1,24 @@
+// 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.searchApplication.put({
+  name: "my-example-app",
+  search_application: {
+    indices: ["my-example-app"],
+    template: {
+      script: {
+        lang: "mustache",
+        source:
+          '\n        {\n          "query": {\n            "bool": {\n              "must": [\n              {{#query}}\n              {\n                "query_string": {\n                  "query": "{{query}}",\n                  "search_fields": {{#toJson}}search_fields{{/toJson}}\n                }\n              }\n              {{/query}}\n            ]\n            }\n          }\n        }\n      ',
+        params: {
+          query: "",
+          search_fields: "",
+        },
+      },
+    },
+  },
+});
+console.log(response);
+----