update CONTRIBUTING.md with new folder structure

CONTRIBUTING.md

@@ -19,12 +19,12 @@ Uniswap interface uses [LinguiJS](https://lingui.js.org/) to manage locales and
 - Follow instructions in [README.md](https://github.com/Uniswap/uniswap-interface/blob/main/README.md) for instructions on running the app locally to clone Uniswap interface locally
 - Add locale to locales array in [lingui.config.js](https://github.com/Uniswap/uniswap-interface/blob/main/lingui.config.js#L14)
 - Add locale to locales array in [i18n.tsx](https://github.com/Uniswap/uniswap-interface/blob/main/src/i18n.tsx#L7)
-- Run `yarn i18n:extract` to generate messages.po inside [src/locales/{locale}](https://github.com/Uniswap/uniswap-interface/tree/main/src/locales)
+- Run `yarn i18n:extract` to generate [src/locales/{locale}.po](https://github.com/Uniswap/uniswap-interface/tree/main/src/locales)
 - Continue to [Existing Translation](#existing-translation) below
 
 ## Existing Translation
 
-- Edit [src/locales](https://github.com/Uniswap/uniswap-interface/tree/main/src/locales)/{locale}/messages.po either manually or with a PO editor (see [Editing PO Files](https://www.gnu.org/software/trans-coord/manual/web-trans/html_node/PO-Editors.html)).
-- Run `yarn i18n:compile` to generate src/locales/{locale}/messages.js
+- Edit [src/locales](https://github.com/Uniswap/uniswap-interface/tree/main/src/locales)/{locale}.po either manually or with a PO editor (see [Editing PO Files](https://www.gnu.org/software/trans-coord/manual/web-trans/html_node/PO-Editors.html)).
+- Run `yarn i18n:compile` to generate src/locales/{locale}.js
 - Run `yarn start` to start a server locally to verify changes
 - Submit PR against main