Digital editions are very helpful, but it is still necessary to have the books or image scans of the books to check possible typos such as this one.
This is unfortunately too true. And I think this points to one best practice for etexts. I.e. include a link to the printed edition (copyright permitting) that the etext is based on. One collection that follows this best practice is: The Resource Library for Dharmaśāstra Studies of the University of Texas at Austin. https://sites.utexas.edu/sanskrit/resources/dharmasastra/