Gemfile in markdown_exec-0.0.1 vs Gemfile in markdown_exec-0.0.3

@@ -1,12 +1,12 @@
 # frozen_string_literal: true
 
-source "https://rubygems.org"
+source 'https://rubygems.org'
 
 # Specify your gem's dependencies in markdown_exec.gemspec
 gemspec
 
-gem "rake", "~> 13.0"
+gem 'rake', '~> 13.0'
 
-gem "minitest", "~> 5.0"
+gem 'minitest', '~> 5.0'
 
-gem "rubocop", "~> 1.21"
+gem 'rubocop', '~> 1.21'