Update documentation/how-to/itinerary.en.md

documentation/how-to/itinerary.en.md

@@ -16,7 +16,15 @@ Here is an example for navigation to features of a point layer.
 Create a new field in your data table (type text). In the attribute form settings, select "attachment" as widget type. Tick "Display a hyperlink for document path (read-only)".
 Then enter the following expression as default value:
 
-*concat( 'https://www.google.com/maps/dir/?api=1&destination=', y(transform($geometry, layer_property(@layer, 'crs'),'EPSG:4326')), '%2C', x(transform($geometry, layer_property(@layer, 'crs'),'EPSG:4326')), '&travelmode=driving')*
+```
+concat(
+  'https://www.google.com/maps/dir/?api=1&destination=',
+  y(transform($geometry, layer_property(@layer, 'crs'), 'EPSG:4326')),
+  '%2C',
+  x(transform($geometry, layer_property(@layer, 'crs'), 'EPSG:4326')),
+  '&travelmode=driving'
+)
+```
 
 And tick "Apply default value on update" in case you make changes to your geometry.