You can download the actual version of the documentation (including the changes in the Nightly Builds) from here:
Documentation source code can be found on GitHub in the deviation manual repository.
You can download it as a ZIP file.
You can download the documentation of the last release from the folloving links:
Deviation User Manual for DEVO 6/8/12 version 4.0
Deviation User Manual for DEVO 7e/10 version 4.0