Clarify usage on natura.tiff

doc/tutorial.rst

@@ -207,10 +207,14 @@ If you create the cutout for a certain year (let's say 2013) and want to run sce
 
 In case you need model a number of years, a convenient approach may be to create the cutout for the whole period under interest (e.g. 2013-2015) so that you don't need to build any additional cutouts. Note, however, that the disk requirements increase in this case.
 
-3. Build a natura.tiff raster
+3. Check natura.tiff raster
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-A raster file `natura.tiff` is used to store shapes of the protected and reserved nature areas. Such landuse restrictions can be taking into account when calculating the renewable potential with `build_renewable_profiles`.
+A raster file `natura.tiff` is used to store shapes of the protected and reserved nature areas. Such landuse restrictions can be taking into account when calculating the renewable potential with `build_renewable_profiles` by switching-on `natura` option:
+
+.. code:: bash
+
+    natura: true
 
 A pre-built `natura.tiff` is loaded along with other data needed to run a model with `retrieve_databundle_light` rule. This raster file contains data on the on protected areas around the world where areas no (renewable) assets can be installed. The `natura.tiff` raster has now global coverage so you don't need to create it locally.