Nominatim Locator configuration text and new locator settings image

Author: uprel

docs/user_manual/introduction/img/options_locator.png

@@ -1370,6 +1370,7 @@ It provides some default filters (with prefix) to use:
   The coordinate is expected in WGS 84 (``epsg:4326``) and/or map canvas CRS.
 * :guilabel:`Nominatim Geocoder` (``>``): geocodes using the `Nominatim <https://nominatim.org>`_
   geocoding service of the OpenStreetMap Foundation.
+  Press |settings| to limit results to one or more countries using list of country codes.
 * Processing Algorithms (``a``): searches and opens a Processing algorithm dialog.
 * :guilabel:`Edit Selected Features` (``ef``): gives quick access and runs a compatible
   :ref:`modify-in-place <processing_inplace_edit>` Processing algorithm on the