chore: add translation contribution docs (#1379)

apps/documentation/pages/developers/contributing/_meta.json

@@ -0,0 +1,4 @@
+{
+  "index": "Getting Started",
+  "contributing-translations": "Contributing Translations"
+}

apps/documentation/pages/developers/contributing/contributing-translations.mdx

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+---
+title: Contributing Translations
+description: Learn how to contribute translations to Documenso and become part of our community.
+---
+
+import { Callout, Steps } from 'nextra/components';
+
+# Contributing Translations
+
+We are always open for help with translations! Currently we utilise AI to generate the initial translations for new languages, which are then improved over time by our awesome community.
+
+If you are looking for development notes on translations, you can find them [here](/developers/local-development/translations).
+
+<Callout type="info">
+  Contributions are made through GitHub Pull Requests, so you will need a GitHub account to
+  contribute.
+</Callout>
+
+## Overview
+
+We store our translations in PO files, which are located in our GitHub repository [here](https://github.com/documenso/documenso/tree/main/packages/lib/translations).
+
+The translation files are organized into folders represented by their respective language codes (`en` for English, `de` for German, etc). Each language folder contains three PO files:
+
+1. `web.po`: Translations for the web application
+2. `marketing.po`: Translations for the marketing application
+3. `common.po`: Shared translations between web and marketing
+
+Each PO file contains translations which look like this:
+
+```po
+#: apps/web/src/app/(signing)/sign/[token]/no-longer-available.tsx:61
+msgid "Want to send slick signing links like this one? <0>Check out Documenso.</0>"
+msgstr "Möchten Sie auffällige Signatur-Links wie diesen senden? <0>Überprüfen Sie Documenso.</0>"
+```
+
+- `msgid`: The original text in English (never edit this manually)
+- `msgstr`: The translated text in the target language
+
+<Callout type="warning">
+  Notice the `<0>` tags? These represent HTML elements and must remain in both the `msgid` and `msgstr`. Make sure to translate the content between these tags while keeping the tags intact.
+</Callout>
+
+## How to Contribute
+
+### Updating Existing Translations
+
+1. Fork the repository.
+2. Navigate to the appropriate language folder.
+3. Open the PO file you want to update (web.po, marketing.po, or common.po).
+4. Make your changes, ensuring you follow the PO file format.
+5. Commit your changes with a message such as `chore: update German translations`
+6. Create a Pull Request.
+
+### Adding a New Language
+
+If you want to add translations for a language that doesn't exist yet:
+
+1. Create an issue in our GitHub repository requesting the addition of the new language.
+2. Wait for our team to review and approve the request.
+3. Once approved, we will set up the necessary files and kickstart the translations with AI to provide initial coverage.
+
+## Need Help?
+
+<Callout type="info">
+  If you have any questions, hop into our [Discord](https://documen.so/discord) and ask us directly!
+</Callout>
+
+Thank you for helping make Documenso more accessible to users around the world!

apps/documentation/pages/developers/contributing/index.mdx

@@ -1,5 +1,5 @@
 ---
-title: Contributing Guide
+title: Getting started
 description: Learn how to contribute to Documenso and become part of our community.
 ---