Se añade mi nombre al hello.md

[Sebas0718]

No description provided.

[Copilot]

Pull request overview

This PR updates the course participant list in hello.md by appending a new entry at the end, consistent with the “add your GitHub username” workflow described at the top of the file.

Changes:

• Re-adds the last existing entry to accommodate insertion at the end of the list
• Adds a new participant entry to hello.md

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[Copilot]

The file header asks contributors to add their GitHub username, but the newly added entry "Sebastian Chaves" contains a space (GitHub usernames cannot). Please replace this with the actual GitHub handle (e.g., without spaces) to match the rest of the list.

Suggested change

	- Sebastian Chaves
	- SebastianChaves