[Sync EN] ext/swoole: Optimize swoole event docs (#4774)

[github-actions]

Commit: https://github.com/php/doc-en/commit/282797eedc7c7bca6a6f55a9aad32b135feb3320
PR: https://github.com/php/doc-en/pull/4774

Neue EN-Dateien (noch nicht übersetzt)

• reference/swoole/swoole.event.xml
• reference/swoole/swoole/event/add.xml
• reference/swoole/swoole/event/cycle.xml
• reference/swoole/swoole/event/defer.xml
• reference/swoole/swoole/event/del.xml
• reference/swoole/swoole/event/dispatch.xml
• reference/swoole/swoole/event/exit.xml
• reference/swoole/swoole/event/isset.xml
• reference/swoole/swoole/event/set.xml
• reference/swoole/swoole/event/wait.xml
• reference/swoole/swoole/event/write.xml