Refactor JSON responses expectations in API specs

spec/integration/api/api_sign_in_spec.rb

@@ -13,9 +13,7 @@ describe 'API sign in' do
   it 'signs the user in with valid credentials' do
     do_create
 
-    expect(json).to eq({
-      id: user.id
-    })
+    expect(json).to eq(id: user.id)
   end
 
   [:email, :password].each do |attr|

spec/integration/api/application_spec.rb

@@ -7,7 +7,7 @@ describe 'API application' do
     before { get api_ping_path, format: :json }
 
     it 'responds with a pong' do
-      expect(json).to eq({ pong: 'ok' })
+      expect(json).to eq(pong: 'ok')
     end
   end
 end