[Sync EN] Fix grammar in language/types

[github-actions]

PR: https://github.com/php/doc-en/pull/5746 (2026-08-07)

Файлы RU для обновления

• language/types/array.xml
• language/types/callable.xml
• language/types/declarations.xml
• language/types/float.xml
• language/types/integer.xml
• language/types/iterable.xml
• language/types/mixed.xml
• language/types/never.xml
• language/types/null.xml
• language/types/numeric-strings.xml
• language/types/object.xml
• language/types/relative-class-types.xml
• language/types/resource.xml
• language/types/singleton.xml
• language/types/string.xml
• language/types/type-juggling.xml
• language/types/type-system.xml
• language/types/void.xml