Added/updated snippets for docs (#2318)

docs/doc_examples/6b6fd0a5942dfb9762ad2790cf421a80.asciidoc

@@ -0,0 +1,29 @@
+// 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: ["example-index"],
+    template: {
+      script: {
+        lang: "mustache",
+        source:
+          '\n        {\n          "query": {\n            "bool": {\n              "must": [\n              {{#query}}\n                \n              {{/query}}\n            ],\n            "filter": {{#toJson}}_es_filters{{/toJson}}\n            }\n          },\n          "_source": {\n            "includes": ["title", "plot"]\n          },\n          "aggs": {{#toJson}}_es_aggs{{/toJson}},\n          "from": {{from}},\n          "size": {{size}},\n          "sort": {{#toJson}}_es_sort_fields{{/toJson}}\n        }\n      ',
+        params: {
+          query: "",
+          _es_filters: {},
+          _es_aggs: {},
+          _es_sort_fields: {},
+          size: 10,
+          from: 0,
+        },
+        dictionary: {},
+      },
+    },
+  },
+});
+console.log(response);
+----