Loong64 and riscv are missing from the index

[wangling12]

At least there are riscv and loong64 tars in https://unofficial-builds.nodejs.org/download/release/v20.6.0/

But it seems that these architectures are missing in ndex.json and index.tab.

[rvagg]

oh, good catch; we probably need to update https://github.com/nodejs/nodejs-dist-indexer/blob/main/transform-filename.js#L37-L42

would you mind opening a pull request to add the missing ones there? we also might need something on the README here to remind people when adding new types

[wangling12]

Finished, hope there are nothing wrong in prs.

[rvagg]

old:

{"version":"v20.6.1","date":"2023-09-08","files":["headers","linux-armv6l","linux-x64-musl","linux-x64-pointer-compression"],"npm":"9.8.1","v8":"11.3.244.8","uv":"1.46.0","zlib":"1.2.13.1-motley","openssl":"3.0.10+quic","modules":"115","lts":false,"security":false},

new:

{"version":"v20.6.1","date":"2023-09-08","files":["headers","linux-armv6l","linux-loong64","linux-riscv64","linux-x64-glibc-217","linux-x64-musl","linux-x64-pointer-compression"],"npm":"9.8.1","v8":"11.3.244.8","uv":"1.46.0","zlib":"1.2.13.1-motley","openssl":"3.0.10+quic","modules":"115","lts":false,"security":false},

thanks for the contribution!