Update sample_themed.cfg

To fix reference to file_recipes option.

example_configs/sample_themed.cfg

@@ -38,7 +38,7 @@ file_fortunes: sample_themed/insults.txt
 # Load the recipie tag names from this file. Used with Knowlege Books.
 # See recipes.txt for more information. (Note this file isn't provided for
 # this example and so the next line has been commented.)
-# file_fortunes: sample_themed/recipes.txt
+# file_recipes: sample_themed/recipes.txt
 
 # Choose custom paintings from this directory.
 # See README.txt in the paintings folder for more information