Emit correct project name with --name

[csmoe]

Fixes #5440

[rust-highfive]

Thanks for the pull request, and welcome! The Rust team is excited to review your changes, and you should hear from @matklad (or someone else) soon.

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[alexcrichton]

@bors: r+

Thanks!

[bors]

📌 Commit 1edfd9b has been approved by alexcrichton

[bors]

⌛ Testing commit 1edfd9b with merge 2eebc86...

[bors]

☀️ Test successful - status-appveyor, status-travis
Approved by: alexcrichton
Pushing 2eebc86 to master...

[phrohdoh]

That was quick! Thanks @csmoe. 😄