bin/install_git_hooks in telegram-bot-0.16.1 vs bin/install_git_hooks in telegram-bot-0.16.3

@@ -1,7 +1,8 @@
 #!/usr/bin/env ruby
+# frozen_string_literal: true
 
-root = File.expand_path('../../', __FILE__)
+root = File.expand_path('..', __dir__)
 hooks_dir = "#{root}/bin/git-hooks"
 
 `ls -1 #{hooks_dir}`.each_line.map(&:strip).each do |file|
   `ln -sf #{hooks_dir}/#{file} #{root}/.git/hooks/#{file}`
 end