Fix invalid header in Packer 0.8.1 cask
@ -1,4 +1,4 @@
cask :v1 => 'packer' do
cask :v1 => 'packer081' do
version '0.8.1'
sha256 'ba853fdb7cdb000fa64899e88885f49c726cd62099bb76d95f248eca60e25af4'