If you'd like to try a similar Applet that saves contacts to a spreadsheet instead of a doc, try this: https://ifttt.com/applets/90224p
Then
Append to a document
This action will append to a Google document as determined by the file name and folder path you specify. Once a file’s size reaches 2MB a new file will be created.
Discover more time saving integrations for iOS Contacts and Google Docs