Update README.md

README.md

@@ -58,7 +58,7 @@ If you are interested in doing a translation, please follow these steps:
 
 1. Fork the repository and make a branch for your translation.
 1. If it's a new language, add it to `config.toml`,
-  with a localized name and language code/optional region (e.g. `pt` or `pt-br`). See the [list of language codes here](https://www.science.co.il/language/Codes.php)
+  with a localized name and language code/optional region (e.g. `pt` or `pt-br`). See the [list of ISO 639-2 language codes here](https://www.loc.gov/standards/iso639-2/php/code_list.php)
 1. Create a markdown file with your translation in `version/2/0/code_of_conduct.LANGUAGECODE.md`. (Underscores, not hyphens.)
 1. Open a pull request.
 1. We will put out a call to have one or more other native speakers review the translation.