[Sync EN] Fix incorrect claim that opcache_invalidate() skips the file cache (#5723)

[github-actions]

Commit: https://github.com/php/doc-en/commit/82cdc19b6292e0f840e6b22ca430105d9f0aa89e
PR: https://github.com/php/doc-en/pull/5723

Neue EN-Dateien (noch nicht übersetzt)

• reference/opcache/functions/opcache-invalidate.xml