Beerust 1.1.3

Added

• The crates.io page (docs/crates-readme.md) now carries a 13-language switcher linking to the repository READMEs

Fixed

• docs/api.*: 11 translations were missing the link to the Chinese original (api.md)
• docs/CHANGELOG.zh.md and docs/CONTRIBUTING.zh.md were the only files in their families without a self-link