style: standardize quotes in tests

- Changed single quotes to double quotes in assertions for consistency.
- Updated routes file for spacing consistency in resource declaration.

These changes improve code readability and maintain consistency in the
codebase, making it easier for developers to follow the style guide.

test/integration/user_show_test.rb

@@ -15,6 +15,6 @@ class UserShowTest < ActionDispatch::IntegrationTest
   test "should display user when activated" do
     get user_path(@active_user)
     assert_response :success
-    assert_template 'users/show'
+    assert_template "users/show"
   end
 end

test/integration/users_signup_test.rb

@@ -1,7 +1,6 @@
 require "test_helper"
 
 class UsersSignupTest < ActionDispatch::IntegrationTest
-
   def setup
     ActionMailer::Base.deliveries.clear
   end
@@ -42,13 +41,13 @@ class UsersSignupTest < ActionDispatch::IntegrationTest
     get edit_account_activation_path("invalid token", email: user.email)
     assert_not is_logged_in?
     # 令牌有效，邮箱错误
-    get edit_account_activation_path(user.activation_token, email: 'wrong')
+    get edit_account_activation_path(user.activation_token, email: "wrong")
     assert_not is_logged_in?
     # 令牌有效
     get edit_account_activation_path(user.activation_token, email: user.email)
     assert user.reload.activated?
     follow_redirect!
-    assert_template 'users/show'
+    assert_template "users/show"
     assert is_logged_in?
   end
 end