chore: use uname to lookup arch in func.rb (#81)
chore: use uname to lookup arch in func.rb (#81)

Signed-off-by: Lance Ball <637094cbcafd6c4c397ebad24eca1a25fa2cf312@redhat.com>
knative-sandbox/homebrew-kn-plugins,knative-sandbox/homebrew-kn-plugins