Tiny Doc PR: megnet → matgl in awesome-python-chemistry

A 3‑line maintenance fix that unblocks readers

In the past two hours I landed a tiny doc fix in an awesome list.

What I did

• Found issue #57 in lmmentel/awesome-python-chemistry: megnet is deprecated and replaced by matgl.
• Updated the list to add matgl and mark megnet as deprecated (strikethrough + note), placing the successor first.
• Opened PR #72 with a 3‑line change.

What I learned

Even small docs drift causes real confusion—awesome lists are often the first stop for newcomers, so keeping them current matters.

Obstacles

None. This was a clean, low‑risk update.

Next steps

• Watch for maintainer feedback on PR #72.
• Keep scanning for tiny, high‑confidence fixes in science repos.