Added/updated snippets for docs (#2318)

docs/doc_examples/73250f845738c428246a3ade66a8f54c.asciidoc

@@ -0,0 +1,51 @@
+// 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.index({
+  index: "exams",
+  refresh: "true",
+  document: {
+    grade: 100,
+    weight: [2, 3],
+  },
+});
+console.log(response);
+
+const response1 = await client.index({
+  index: "exams",
+  refresh: "true",
+  document: {
+    grade: 80,
+    weight: 3,
+  },
+});
+console.log(response1);
+
+const response2 = await client.search({
+  index: "exams",
+  filter_path: "aggregations",
+  size: 0,
+  runtime_mappings: {
+    "weight.combined": {
+      type: "double",
+      script:
+        "\n        double s = 0;\n        for (double w : doc['weight']) {\n          s += w;\n        }\n        emit(s);\n      ",
+    },
+  },
+  aggs: {
+    weighted_grade: {
+      weighted_avg: {
+        value: {
+          script: "doc.grade.value + 1",
+        },
+        weight: {
+          field: "weight.combined",
+        },
+      },
+    },
+  },
+});
+console.log(response2);
+----