Add a line of documentation to pre-selecting the ical URL in the export popout
Add a line of documentation to pre-selecting the ical URL in the export popout

ucamrc/grasshopper-ui,Coenego/grasshopper-ui,CUL-DigitalServices/grasshopper-ui,Coenego/grasshopper-ui,ucamrc/grasshopper-ui,fronteerio/grasshopper-ui,ucamrc/grasshopper-ui,Coenego/grasshopper-ui,CUL-DigitalServices/grasshopper-ui,CUL-DigitalServices/grasshopper-ui,fronteerio/grasshopper-ui,fronteerio/grasshopper-ui