Purpose of this pull request

This pull request (PR) replaces content of all symlinks to files guides/v2.1 with content from reference files.

Affected DevDocs pages

• all files generated from symlinks to files at guides/v2.1

Additional details

The Ruby script that was used to break the symlinks:
break_symlinks.rb:

def given_path
  ARGV[0]
end

def pattern(path)
    File.absolute_path(
      File.join(path, '**', '*')
    )
end

Dir.glob(pattern(given_path)) do |entry|
  realpath = File.realpath(entry)
    if File.symlink?(entry) and realpath.include? 'guides/v2.1'
      `unlink #{entry}`
      `cp #{realpath} #{entry}`
    end
end

The script requires a path to the devdocs directory as an argument. Example:

$ ruby break_symlinks.rb ~/Projects/repos/magento/devdocs

Internal ticket: MAGEDOC-3843