Fix typo

configuration.org

@@ -21,7 +21,7 @@ Some of my configuration entries where borrowed from other people, see
   This sets gcc optimization flag to =-O2= (max optimization level,
   fully adherent to the langage semantic).
 #+begin_src emacs-lisp
-(unless (version< emacs-version "28"))
+(unless (version< emacs-version "28")
 (setq comp-speed 2)
 )
 #+end_src