fix(rubocop): Style/StringConcatenation

Prefer string interpolation to string concatenation

Author: nschonni

script/alphabetize

@@ -7,7 +7,7 @@ require 'open-uri'
 require 'json'
 require 'yaml'
 
-files = Dir[File.expand_path('../_data/', File.dirname(__FILE__)) + '/*.yml']
+files = Dir["#{File.expand_path('../_data/', File.dirname(__FILE__))}/*.yml"]
 
 files.each do |file|
   contents = File.open(file).read
@@ -23,7 +23,7 @@ files.each do |file|
   end
 
   # Add extra line break between groups, indent arrays, and strip header
-  formatted_output = comment + output.to_yaml.gsub(/^(.+?):$/, "\n" + '\1:').gsub(/^- /, '  - ').gsub(/\A---\n/m, '')
+  formatted_output = comment + output.to_yaml.gsub(/^(.+?):$/, "\n\\1:").gsub(/^- /, '  - ').gsub(/\A---\n/m, '')
 
   File.open(file, 'w') { |f| f.write(formatted_output) }
 end