Add me as proofreader

doc/development/i18n/proofreader.md

@@ -21,6 +21,7 @@ are very appreciative of the work done by translators and proofreaders!
   - Paolo Falomo - [GitLab](https://gitlab.com/paolofalomo), [Crowdin](https://crowdin.com/profile/paolo.falomo)
 - Japanese
 - Korean
+  - Chang-Ho Cha - [GitLab](https://gitlab.com/changho-cha), [Crowdin](https://crowdin.com/profile/zzazang)
   - Huang Tao - [GitLab](https://gitlab.com/htve), [Crowdin](https://crowdin.com/profile/htve)
 - Polish
   - Filip Mech - [GitLab](https://gitlab.com/mehenz), [Crowdin](https://crowdin.com/profile/mehenz)