README.md in truemail-2.4.2 vs README.md in truemail-2.4.3

@@ -191,33 +191,33 @@
   config.validation_type_for = { 'somedomain.com' => :regex, 'otherdomain.com' => :mx }
 
   # Optional parameter. Validation of email which contains whitelisted domain always will
   # return true. Other validations will not processed even if it was defined in validation_type_for
   # It is equal to empty array by default.
-  config.whitelisted_domains = ['somedomain1.com', 'somedomain2.com']
+  config.whitelisted_domains = %w[somedomain1.com somedomain2.com]
 
   # Optional parameter. With this option Truemail will validate email which contains whitelisted
   # domain only, i.e. if domain whitelisted, validation will passed to Regex, MX or SMTP validators.
   # Validation of email which not contains whitelisted domain always will return false.
   # It is equal false by default.
   config.whitelist_validation = true
 
   # Optional parameter. Validation of email which contains blacklisted domain always will
   # return false. Other validations will not processed even if it was defined in validation_type_for
   # It is equal to empty array by default.
-  config.blacklisted_domains = ['somedomain3.com', 'somedomain4.com']
+  config.blacklisted_domains = %w[somedomain3.com somedomain4.com]
 
   # Optional parameter. With this option Truemail will filter out unwanted mx servers via
   # predefined list of ip addresses. It can be used as a part of DEA (disposable email
   # address) validations. It is equal to empty array by default.
-  config.blacklisted_mx_ip_addresses = ['1.1.1.1', '2.2.2.2']
+  config.blacklisted_mx_ip_addresses = %w[1.1.1.1 2.2.2.2]
 
   # Optional parameter. This option will provide to use custom DNS gateway when Truemail
   # interacts with DNS. Valid port numbers are in the range 1-65535. If you won't specify
   # nameserver's ports Truemail will use default DNS TCP/UDP port 53. By default Truemail
   # uses DNS gateway from system settings and this option is equal to empty array.
-  config.dns = ['10.0.0.1', '10.0.0.2:54']
+  config.dns = %w[10.0.0.1 10.0.0.2:54]
 
   # Optional parameter. This option will provide to use not RFC MX lookup flow.
   # It means that MX and Null MX records will be cheked on the DNS validation layer only.
   # By default this option is disabled.
   config.not_rfc_mx_lookup_flow = true
@@ -349,12 +349,12 @@
 ```ruby
 require 'truemail'
 
 Truemail.configure do |config|
   config.verifier_email = '[e-mail]'
-  config.whitelisted_domains = ['white-domain.com', 'somedomain.com']
-  config.blacklisted_domains = ['black-domain.com', 'somedomain.com']
+  config.whitelisted_domains = %w[white-domain.com somedomain.com]
+  config.blacklisted_domains = %w[black-domain.com somedomain.com]
   config.validation_type_for = { 'somedomain.com' => :mx }
 end
 ```
 
 ##### Whitelist case
@@ -398,11 +398,11 @@
 ```ruby
 require 'truemail'
 
 Truemail.configure do |config|
   config.verifier_email = '[e-mail]'
-  config.whitelisted_domains = ['white-domain.com']
+  config.whitelisted_domains = %w[white-domain.com]
   config.whitelist_validation = true
 end
 ```
 
 When email domain in whitelist and `whitelist_validation` is sets equal to `true` validation type will be passed to other validators. Validation of email which not contains whitelisted domain always will return `false`.
@@ -766,10 +766,10 @@
 ```ruby
 require 'truemail'
 
 Truemail.configure do |config|
   config.verifier_email = '[e-mail]'
-  config.blacklisted_mx_ip_addresses = ['127.0.1.2']
+  config.blacklisted_mx_ip_addresses = %w[127.0.1.2]
 end
 
 Truemail.validate('[e-mail]', with: :mx_blacklist)
 
 => #<Truemail::Validator:0x00007fca0c8aea70