Fix rspec

spec/lib/gdk/command/open_spec.rb

@@ -20,7 +20,7 @@
   describe '#run' do
     context 'asking for help' do
       it 'prints help and exits' do
-        expect { subject.run(%w[--help]) }.to output(/--help              Display help/).to_stdout
+        expect { subject.run(%w[--help]) }.to output(/-h, --help          Display help/).to_stdout
       end
     end
 

spec/lib/gdk/command/restart_spec.rb

@@ -4,7 +4,7 @@
   describe '#run' do
     context 'asking for help' do
       it 'prints help and exits' do
-        expect { subject.run(%w[--help]) }.to output(/--help             Display help/).to_stdout
+        expect { subject.run(%w[-h]) }.to output(/-h, --help         Display help/).to_stdout
       end
     end
 

spec/lib/gdk/command/start_spec.rb

@@ -11,7 +11,7 @@
   describe '#run' do
     context 'asking for help' do
       it 'prints help and exits' do
-        expect { subject.run(%w[--help]) }.to output(/--help             Display help/).to_stdout
+        expect { subject.run(%w[--help]) }.to output(/-h, --help         Display help/).to_stdout
       end
     end