It's a feature in Samsung keyboard either turn off Samsung experience or different keyboard like Google GboardGalaxy s10 and their standard texting service that comes with phone. It's a link that goes to my google calendar. I posted pics to show what I mean. When I click on "today" it brings me to the calendar
Try to go settings >account >Samsung tap>privacy tap > customization services tap >go in each menu and turn off see if that helpsIs experience an app? I don't have it on my phone. I switched to Gboard and it still leaves a link
Try go into settings >apps>,3 dots upper right corner tap>scroll to reset app preferencesUnfortunately it didnt