As far as I'm aware you can't revert a single module in one go. This is because the source that you changed (e.g. a Snippet) makes the changes in the module's pages where you're using it.
What I tend to do depending on if I have other changes that I need to keep is:
1. Go to changes tab and revert everything that requires reverting by right clicking and selecting "Revert change"; or
2. Throw away the Project directory from my computer and get the latest version from the repository
The second option - as said - only when you have changes that you need to revert and no work that needs to be kept. Hope this helps you out.