Fix typo in org-plot.el

lisp/org-plot.el

@@ -134,7 +134,7 @@ Pass PARAMS through to `orgtbl-to-generic' when exporting TABLE."
 (defun org-plot/gnuplot-to-grid-data (table data-file params)
   "Export the data in TABLE to DATA-FILE for gnuplot.
 This means, in a format appropriate for grid plotting by gnuplot.
-PARAMS specifies which columns of TABLE should be plotted as independant
+PARAMS specifies which columns of TABLE should be plotted as independent
 and dependant variables."
   (interactive)
   (let* ((ind (- (plist-get params :ind) 1))