Change single quotes to double quotes

spec/lib/admin_wysiwyg_sanitizer_spec.rb

@@ -1,10 +1,10 @@
-require 'rails_helper'
+require "rails_helper"
 
 describe AdminWYSIWYGSanitizer do
   let(:sanitizer) { AdminWYSIWYGSanitizer.new }
 
-  describe '#sanitize' do
-    it 'allows images' do
+  describe "#sanitize" do
+    it "allows images" do
       html = 'Dangerous<img src="/smile.png" alt="Smile" style="width: 10px;"> image'
       expect(sanitizer.sanitize(html)).to eq(html)
     end