Added complete Spanish (es) translation and updated Docusaurus

[AA1-34-Ganesh]

This PR introduces the complete Spanish (es) translation for the entire Learn to Cloud guide, including the Welcome page and all Phases (0–5).
It ensures full internationalization (i18n) support by adding missing translated files and verifying that the /es/ route renders correctly.

All files are placed in the appropriate directory:

This PR addresses the missing Spanish translation and the language dropdown issue in the navbar.
Issue link:#263

This contribution is related to Internationalization (i18n) and Documentation localization.

• Docusaurus – Static site generator
• Markdown – For content translation files
• Node.js / npm – For local testing (npm run start -- --locale es)

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Screenshots (if appropriate):

Below is a preview of the working English version(in deployed link) and Spanish version running locally after adding the missing translation files.

English (Before)	Spanish (After)
![English Screenshot](

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[madebygps]

@AA1-34-Ganesh I can tell these were translated with AI, were you able to manually verify the translations?

[AA1-34-Ganesh]

Thank you for your review.Yes, Initial translation done by using AI to ensure consistency and speed. Afterward I manually verified all the content using Google Translator and Spanish Translation Tool to confirm any grammatical mistakes are there.

[madebygps]

As a Spanish speaker, I know most translation tools are not good enough, will have to wait for a full manual review before merging.

[AA1-34-Ganesh]

Thank you for your feedback. I am completely understand and agree for accurate translations ,especially technical ones, require careful manual review, I am happy to wait for the full manual review before merging, if needed I can also help and adjust based on the reviewer's feedback.