message: docs: update note on unofficial FreeBSD support
diff: @@ -114,7 +114,7 @@ not be fixed. Some of these may eventually be officially supported (e.g., FreeBS
  A non-comprehensive list of some currently unofficially supported platforms that may compile/work include:
  -- FreeBSD on `x86_64` (only on master branch/nightly build for now)
  +- FreeBSD on `x86_64`
  - Linux on `armv6`, `armv7`, `powerpc64le`, `riscv64gc`
  - macOS on `aarch64`
  