doc: better describe the effect of the filter_geometry setting

conf/default.toml

@@ -63,11 +63,13 @@ background_color = "#fdfbff"
 
 # This section contains settings used for fine-tuning the search experience
 [search]
+
 # Optional; specify a GeoJSON object to be used as filter: all records contained inside the geometry will be boosted on top,
-# all records which _do not_ intersect with the geometry will be excluded; can be specified as URL or inline
+# all records which do not intersect with the geometry will be shown with lower priority; can be specified as URL or inline
 # Note: if the GeoJSON object contains multiple features, only the geometry of the first one will be kept!
 # filter_geometry_url = "https://my.domain.org/assets/boundary.geojson"
 # filter_geometry_data = '{ "coordinates": [...], "type": "Polygon" }'
+
 # The advanced search filters available to the user can be customized with this setting.
 # The following fields can be used for filtering: 'publisher', 'format', 'publicationYear', 'standard', 'inspireKeyword', 'topic', 'isSpatial', 'license'
 # any other field will be ignored