You can use this Expression replaceAll($YourString, '’', ''), which means First Parameter is your String, the Second one is what you want to replace is put in a single quote, and finally the Third parameter is to empty the apostrophes.
you try this one : replaceAll($description, '''', '\')
A single quote should always be escaped again by a single quote. So you should plase four single quotes ‘’’’ here if you want to search the single quote ‘
You can use replaceAll($YourString, '’', '')