Spec update due to change in CLI argument name.

Author: gkellogg

spec/format_spec.rb

@@ -40,7 +40,7 @@
         expect {RDF::CLI.exec(["patch", "serialize", nt], patch_file: StringIO.new(File.read(patch)))}.to write.to(:output)
       end
       it "patches from argument" do
-        expect {RDF::CLI.exec(["patch", "serialize", nt], patch: patch_enc)}.to write.to(:output)
+        expect {RDF::CLI.exec(["patch", "serialize", nt], patch_input: patch_enc)}.to write.to(:output)
       end
     end
   end