chore(docs): use client instead of package name in Node examples (openai#941)

Author: stainless-app[bot]

README.md

@@ -32,7 +32,7 @@ The full API of this library can be found in [api.md file](api.md) along with ma
 ```js
 import OpenAI from 'openai';
 
-const openai = new OpenAI({
+const client = new OpenAI({
   apiKey: process.env['OPENAI_API_KEY'], // This is the default and can be omitted
 });
 
@@ -53,7 +53,7 @@ We provide support for streaming responses using Server Sent Events (SSE).
 ```ts
 import OpenAI from 'openai';
 
-const openai = new OpenAI();
+const client = new OpenAI();
 
 async function main() {
   const stream = await openai.chat.completions.create({
@@ -80,7 +80,7 @@ This library includes TypeScript definitions for all request params and response
 ```ts
 import OpenAI from 'openai';
 
-const openai = new OpenAI({
+const client = new OpenAI({
   apiKey: process.env['OPENAI_API_KEY'], // This is the default and can be omitted
 });
 
@@ -301,7 +301,7 @@ import fs from 'fs';
 import fetch from 'node-fetch';
 import OpenAI, { toFile } from 'openai';
 
-const openai = new OpenAI();
+const client = new OpenAI();
 
 // If you have access to Node `fs` we recommend using `fs.createReadStream()`:
 await openai.files.create({ file: fs.createReadStream('input.jsonl'), purpose: 'fine-tune' });
@@ -399,7 +399,7 @@ You can use the `maxRetries` option to configure or disable this:
 <!-- prettier-ignore -->
 ```js
 // Configure the default for all requests:
-const openai = new OpenAI({
+const client = new OpenAI({
   maxRetries: 0, // default is 2
 });
 
@@ -416,7 +416,7 @@ Requests time out after 10 minutes by default. You can configure this with a `ti
 <!-- prettier-ignore -->
 ```ts
 // Configure the default for all requests:
-const openai = new OpenAI({
+const client = new OpenAI({
   timeout: 20 * 1000, // 20 seconds (default is 10 minutes)
 });
 
@@ -471,7 +471,7 @@ You can also use the `.withResponse()` method to get the raw `Response` along wi
 
 <!-- prettier-ignore -->
 ```ts
-const openai = new OpenAI();
+const client = new OpenAI();
 
 const response = await openai.chat.completions
   .create({ messages: [{ role: 'user', content: 'Say this is a test' }], model: 'gpt-3.5-turbo' })
@@ -582,7 +582,7 @@ import http from 'http';
 import { HttpsProxyAgent } from 'https-proxy-agent';
 
 // Configure the default for all requests:
-const openai = new OpenAI({
+const client = new OpenAI({
   httpAgent: new HttpsProxyAgent(process.env.PROXY_URL),
 });