fix rubocop

Author: sairamsrinivasan

gemfiles/mongoid_4.gemfile

@@ -1,8 +1,8 @@
 # This file was generated by Appraisal
 
-source "https://rubygems.org"
+source 'https://rubygems.org'
 
-gem "mongoid", "~> 4.0.0"
-gem "rails", "~> 4.0"
+gem 'mongoid', '~> 4.0.0'
+gem 'rails', '~> 4.0'
 
-gemspec path: "../"
+gemspec path: '../'

gemfiles/mongoid_5.gemfile

@@ -1,9 +1,9 @@
 # This file was generated by Appraisal
 
-source "https://rubygems.org"
+source 'https://rubygems.org'
 
-gem "mongoid", "~> 5.0.0"
-gem "rails", "~> 4.0"
-gem "bigdecimal", "~> 1.3"
+gem 'bigdecimal', '~> 1.3'
+gem 'mongoid', '~> 5.0.0'
+gem 'rails', '~> 4.0'
 
-gemspec path: "../"
+gemspec path: '../'

gemfiles/mongoid_6.gemfile

@@ -1,8 +1,8 @@
 # This file was generated by Appraisal
 
-source "https://rubygems.org"
+source 'https://rubygems.org'
 
-gem "mongoid", "~> 6.0.2"
-gem "rails", "~> 5.0"
+gem 'mongoid', '~> 6.0.2'
+gem 'rails', '~> 5.0'
 
-gemspec path: "../"
+gemspec path: '../'

gemfiles/mongoid_7.gemfile

@@ -1,8 +1,8 @@
 # This file was generated by Appraisal
 
-source "https://rubygems.org"
+source 'https://rubygems.org'
 
-gem "mongoid", "~> 7.0.0"
-gem "rails", "~> 6.0"
+gem 'mongoid', '~> 7.0.0'
+gem 'rails', '~> 6.0'
 
-gemspec path: "../"
+gemspec path: '../'

gemfiles/mongoid_8.gemfile

@@ -1,8 +1,8 @@
 # This file was generated by Appraisal
 
-source "https://rubygems.org"
+source 'https://rubygems.org'
 
-gem "mongoid", "~> 8.0.0"
-gem "rails", "~> 7.0"
+gem 'mongoid', '~> 8.0.0'
+gem 'rails', '~> 7.0'
 
-gemspec path: "../"
+gemspec path: '../'

gemfiles/mongoid_9.gemfile

@@ -1,7 +1,7 @@
 # This file was generated by Appraisal
 
-source "https://rubygems.org"
+source 'https://rubygems.org'
 
-gem "mongoid", "~> 9.0.0"
+gem 'mongoid', '~> 9.0.0'
 
-gemspec path: "../"
+gemspec path: '../'