Apply changes to translated pages: description about currying

[masmatsum]

In functional_programming.md, description about currying was fixed in https://github.com/ocaml/ocaml.org/pull/1595 (diff). We need to apply changes to translated pages:

• [ ] French: functional_programming.fr.md
• [ ] Italian: functional_programming.it.md
• [ ] Japanese: functional_programming.ja.md
• [ ] Chinese: functional_programming.zh.md

[masmatsum]

For Japanese page, I can create PR by myself (I am a native speaker of Japanese language). Can anyone work on French, Italian and Chinese pages?

[kirisky]

Hi @masmatsum! I will take the Chinese version, I am a native speaker.

[masmatsum]

@kirisky Thank you! 謝謝～

[kirisky]

@masmatsum いいえ, my pleasure, mate! 😉