ref(wasm-pkg): Updates well known file to point to official wasi repo

[thomastaylor312]

Since WebAssembly/WASI#606 has been accepted, we should probably make sure the current defaults for bytecodealliance.org actually point at the official wasi packages available here

[thomastaylor312]

cc @lann

[ricochet]

cc @disquisitioner

[thomastaylor312]

@lann I cc'd you because I wanted to make sure this lined up with what you were thinking. I know you had mentioned a mirror of packages in the BA last time we talked, but I wasn't sure if that was for real or not. I saw the wasm-pkg ones obviously, but thought that was just for testing. Trying to point at whatever we consider the canonical location here.

My purpose here is that any wasi:* packages should come from the official WASI repo when using defaults. Since "bytecodealliance.org" is the default in the packaging tooling, that is why I think it should point there. But I could be ignorant of other things people had planned

[thomastaylor312]

I don't know how I missed this, but this was in bytecodealliance/wasm-pkg-tools#41:

This PR also adds "namespace fallback" config, replacing the hard-coded bytecodealliance.org with two hard-coded fallbacks for wasi: and ba:; these both currently point at bytecodealliance.org but I expect to switch wasi: to wasi.dev once we have that registry properly configured.

So I'll close this because I misread that entirely. This one will still point at the proper BA repos and the new wasi.dev stuff will point at official wasi