fix: Fix docstring order and add node version badge in README

PiperOrigin-RevId: 661411561

Author: happy-qiao

README.md

@@ -1,4 +1,5 @@
 [![NPM Downloads](https://img.shields.io/npm/dm/%40google-cloud%2Fvertexai)](https://www.npmjs.com/package/@google-cloud/vertexai)
+[![Node Current](https://img.shields.io/node/v/%40google-cloud%2Fvertexai)](https://www.npmjs.com/package/@google-cloud/vertexai)
 
 # Vertex AI SDK for Node.js quickstart
 

src/functions/generate_content.ts

@@ -15,12 +15,6 @@
  * limitations under the License.
  */
 
-/**
- * Make a async call to generate content.
- * @param request A GenerateContentRequest object with the request contents.
- * @returns The GenerateContentResponse object with the response candidates.
- */
-
 import {
   GenerateContentRequest,
   GenerateContentResult,
@@ -47,6 +41,11 @@ import {
   getApiVersion,
 } from './pre_fetch_processing';
 
+/**
+ * Make a async call to generate content.
+ * @param request A GenerateContentRequest object with the request contents.
+ * @returns The GenerateContentResponse object with the response candidates.
+ */
 export async function generateContent(
   location: string,
   resourcePath: string,