[Sync EN] registerlocalnamespace.xml Fix typos and amend return type (#5490)

[github-actions]

Commit: https://github.com/php/doc-en/commit/052c737e204db470a7ddd4f082a4069103b64203
PR: https://github.com/php/doc-en/pull/5490

Archivos ES a actualizar

• reference/yaf/yaf_loader/registerlocalnamespace.xml
• reference/yaf/yaf_loader/registernamespace.xml
• reference/yaf/yaf_route_regex/construct.xml