chore: add missing Hindi translations for homepage & UI elements

[3Sangeetha3]

This PR enhances the Hindi localization of the p5.js website by translating UI text that previously appeared in English on the /hi/ route. The goal is to provide a complete and consistent user experience for Hindi-speaking users.

📎 Related Issue
Closes #1015

📌 Changes Made

• Updated src/content/homepage/hi.yaml
• Updated src/content/ui/en.yaml
• Updated src/content/ui/hi.yaml
• Updated HomepageLayout.astro to use {t('Welcome to p5.js')} instead of hard-coded text

📍 Why

• The /hi/ version of the site previously mixed English + Hindi, causing an incomplete localized experience.

🔍 Screenshots

🧪 Testing

• /hi/ version renders correctly
• Navigation + hero text translated
• No layout breakage

📝 Notes
Let me know if any wording changes or translation improvements are required — happy to update.

[ksen0]

Hi @Divyansh013 and @takshittt, is one of you able to take a look at this and check the translations, please? Thank you!

[yugalkaushik]

@ksen0 Hi, Can I review this PR as I'm native hindi speaker.

[Divyansh013]

Hi @Divyansh013 and @takshittt, is one of you able to take a look at this and check the translations, please? Thank you!

I will take a look! Sorry for the delay

[Divyansh013]

Hi @3Sangeetha3 ,the translations here seems a bit off compared to what it actually says. You can see the current translation to check what we are currently using for words like reference and community. Also in line 43, it means see the p5.js community and not the people from entire world. Let me know if you need any help

[3Sangeetha3]

Hi @Divyansh013, thanks for the review!

I’ve updated the translations to align with the existing terminology and corrected the community wording as suggested. Please take another look and let me know if anything else needs adjustment. Thanks!