docs(readme): Add collapsible section for notification examples

- Add a collapsible details section for better organization of notification examples
- Include images for Discord, Slack, Telegram, Lark, Mail, and WeWork
- Improve readability and accessibility of the README documentation

Author: guanguans

README.md

@@ -59,12 +59,17 @@ php artisan exception-notify:test --ansi -v
 
 ### Notification examples
 
+<details>
+<summary>details</summary>
+
 |           discord            |          slack           |            telegram            |
 |:----------------------------:|:------------------------:|:------------------------------:|
 | ![discord](docs/discord.jpg) | ![slack](docs/slack.jpg) | ![telegram](docs/telegram.jpg) |
 |             lark             |           mail           |             weWork             |
 |    ![lark](docs/lark.jpg)    |  ![mail](docs/mail.jpg)  |   ![weWork](docs/weWork.jpg)   |
 
+</details>
+
 ### Skip report
 
 Modify the `boot` method in the `app/Providers/AppServiceProvider.php` file