The first thing you can do is improve your "first impression" in your docs. None of the references to other pages are clickable hyperlinks; which markdown supports without much effort. (Pretty much got me to give up reading because it's the 21st century and hyperlinks have been around for at least 30 years.)

The second thing is to have a general overview of the features of the language on the first page that's a little more then just hello world. Have a loop, a variable, ect. I shouldn't have to "work" to get a feel for what's different and special about your language compared to vanilla Javascript, Typescript, Rust (via WASM,) C# (via WASM) and the countless other transpiled or WASM-compiled languages.

And for any ML inspired language, OCaml, Haskell, Grain, Roc.

Especially Grain, as it was also developed as an ML for WebAssembly.