Added/updated snippets for docs (#2318)

docs/doc_examples/dee3023098d9e63aa9e113beea5686da.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.searchApplication.put({
+  name: "my_search_application",
+  search_application: {
+    indices: ["index1"],
+    template: {
+      script: {
+        lang: "mustache",
+        source:
+          '\n      {\n          "knn": {\n            "field": "{{knn_field}}",\n            "query_vector": {{#toJson}}query_vector{{/toJson}},\n            "k": "{{k}}",\n            "num_candidates": {{num_candidates}}\n          },\n          "fields": {{#toJson}}fields{{/toJson}}\n      }\n      ',
+        params: {
+          knn_field: "image-vector",
+          query_vector: [],
+          k: 10,
+          num_candidates: 100,
+          fields: ["title", "file-type"],
+        },
+      },
+    },
+  },
+});
+console.log(response);
+----