Is it possible to teach customize to save its variables using single quote ' instead of quote?

Example:

…
'(package-archives '(("gnu"   . "http://elpa.gnu.org/packages/")
                     ("melpa" . "http://melpa.org/packages/")))
…

instead of:

…
'(package-archives (quote (("gnu"   . "http://elpa.gnu.org/packages/")
                           ("melpa" . "http://melpa.org/packages/"))))
…