* XML schema correction: fix inline tag types in reference/
Replace incorrect inline markup tags to match doc-en structure:
- <literal> -> <constant> for PHP constants
- <literal> -> <type> for PHP types
- Add missing <emphasis>, <acronym>, <classname> tags
- Remove extra <function> self-references in descriptions
- Fix <parameter> names to match EN
* Fix: remove invalid <parameter> inside <subscript> in log.xml