Update spec/octocatalog-diff/tests/cli/options/puppet_master_token_file_spec.rb

Co-authored-by: Andrew Hayworth <ahayworth@github.com>

Author: seanmil

spec/octocatalog-diff/tests/cli/options/puppet_master_token_file_spec.rb

@@ -15,7 +15,7 @@
         expect(result[:from_puppet_master_token]).to eq(fixture)
       end
 
-      it 'should error if --puppet_master-token-file points to non-existing file' do
+      it 'should error if --puppet-master-token-file points to non-existing file' do
         expect do
           run_optparse(['--basedir', basedir, '--puppet-master-token-file', 'sdafjfkjlafjadsasf'])
         end.to raise_error(Errno::ENOENT)