[BUG] npm init doesn't create a Rust project

### Is there an existing issue for this?

- [X] I have searched the existing issues

### What version of `workers-rs` are you using?

0.0.18

### What version of `wrangler` are you using?

3.5.0

### Describe the bug

I tried to create a new workers-rs project per the instructions in the README.md but the command generates me a JavaScript project instead.

### Steps To Reproduce

```
$ npm init cloudflare project_name worker-rust
$ cd project_name
$ ls
node_modules
package-lock.json
package.json
src
wrangler.toml
```