ox-odt: Fix styles location

* lisp/ox-odt.el (org-odt-styles-dir-list): Point to correct location
  for styles.

Reported-by: Colin Baxter <m43cap@yandex.com>
<http://permalink.gmane.org/gmane.emacs.orgmode/106209>

lisp/ox-odt.el

@@ -172,7 +172,7 @@ and `org-odt-data-dir'.")
    (eval-when-compile
      (and (boundp 'org-odt-data-dir) org-odt-data-dir ; see make install
 	  (expand-file-name "./styles/" org-odt-data-dir)))
-   (expand-file-name "../../etc/styles/" org-odt-lib-dir) ; git
+   (expand-file-name "../etc/styles/" org-odt-lib-dir) ; git
    (expand-file-name "./etc/styles/" org-odt-lib-dir)  ; elpa
    (expand-file-name "./org/" data-directory)	       ; system
    )