Update READMEs (#575)

* Update READMEs

* Update FONDING.yml

---------

Co-authored-by: Deeka Wong <8337659+huangdijia@users.noreply.github.com>

.github/FUNDING.yml

@@ -1,2 +1,2 @@
 github: huangdijia
-custom: ['https://hdj.me/images/alipay-min.jpg', 'https://hdj.me/images/wechat-pay-min.jpg']
+custom: https://hdj.me/sponsors/

README.md

@@ -16,13 +16,13 @@
 
 First, install OpenAI via the [Composer](https://getcomposer.org/) package manager:
 
-```bash
+```shell
 composer require friendsofhyperf/openai-client
 ```
 
 Next, publish the configuration file:
 
-```bash
+```shell
 php bin/hyperf.php vendor:publish friendsofhyperf/openai-client
 ```
 
@@ -72,10 +72,6 @@ $result = $client->completions()->create([
 
 For usage examples, take a look at the [openai-php/client](https://github.com/openai-php/client) repository.
 
-## Donate
-
-> If you like them, Buy me a cup of coffee. [Alipay](https://hdj.me/images/alipay-min.jpg) | [WeChat](https://hdj.me/images/wechat-pay-min.jpg)
-
 ## Contact
 
 - [Twitter](https://twitter.com/huangdijia)