Corrected Simplified Chinese translations of page sizes and others
Corrected Simplified Chinese translations of page sizes and others

Corrected Simplified Chinese translations of page sizes and envelope sizes to match standards and reflect the original meanings. Corrected duplex translations. Replaced full-width brackets with half-width ones, which is the preferred practice of Chinese translation for FOSS projects.
OpenPrinting/cups,OpenPrinting/cups,OpenPrinting/cups,OpenPrinting/cups