Typo in docs

[oddlama]

Hi! I've spotted a type in the docs. As I'm not sure what the intended wording is, I'm opening this issue instead of a PR. amd64, armv7, and amd64 should probably not include amd64 twice, you probably meant to write x86 or amd.

ntfy/docs/develop.md

Line 123 in 28f211b

If you want to build the **ntfy binary including web app and docs for all supported architectures** (amd64, armv7, and amd64),

[binwiederhier]

Thanks. The intended wording is "arm64". If you like you can create a PR to fix it, or just leave this open and I'll fix it eventually.

[oddlama]

Thanks, I'll open a PR soon.