Translation needed for existing languages

[github-actions]

@sumn2u has made changes on the original english version of the book (PR #331)

Visual Diff of Changes:

diff --git a/en/beginner-projects/weather-app.md b/en/beginner-projects/weather-app.md
index be53789..b77eb06 100644
--- a/en/beginner-projects/weather-app.md
+++ b/en/beginner-projects/weather-app.md
@@ -20,3 +20,13 @@ A simple app that fetches and displays weather information based on user locatio
 ## Bonus Challenge
 Add weather icons and background changes based on weather conditions.
 
+## Live Demo
+<div align="center">
+  <iframe
+    src="https://codesandbox.io/embed/qq8r9n?view=preview&module=%2Findex.html"
+    style="width:100%; height:500px; border:0; border-radius:8px; overflow:hidden;"
+    title="Weather App"
+    allow="accelerometer; ambient-light-sensor; camera; encrypted-media; geolocation; gyroscope; hid; microphone; midi; payment; usb; vr; xr-spatial-tracking"
+    sandbox="allow-forms allow-modals allow-popups allow-presentation allow-same-origin allow-scripts"
+  ></iframe>
+</div>

[sumn2u]

🌍 Welcome & Thank You!

We're excited to have you help translate our project! Your contribution will make it accessible to more people around the world.

📝 Translation Task

Please translate the book's content from our base language (English) into the language you are contributing to.

Our project already has community translations for: Turkish, Nepali, French, Indonesian, Spanish, German, and Chinese. We are now looking to add new languages or improve existing ones.

✅ Acceptance Criteria

To ensure high-quality, consistent translations, please follow these guidelines:

• Complete Coverage: All missing content from the base English files is translated
• Human-Reviewed: No machine-only translations. Please review and adjust for natural flow
• Glossary Consistency: Technical terms must match our project's glossary
• Tone Match: The style and tone should match our existing translations

🚀 How to Get Started

The content is organized in language-specific folders. Here's how to contribute:

1. Find Your Language Folder:

   • To improve an existing language (e.g., French), find the /fr/ directory
   • To add a new language, please open an issue first to discuss. You would then create a new directory (e.g., /es/ for Spanish) based on the /en/ structure

2. Work on the Files:

   • The English source files are in the /en/ directory
   • Navigate to the corresponding file in your target language folder
   • Translate any missing .md files or update existing ones
   • Tip: Focus on one file or chapter at a time for easier review

3. Submit Your Changes:

   • Once you've translated the files, submit your changes as a Pull Request

Questions? Don't hesitate to ask here! We're happy to help you get started.