Documentation at: https://docs.blender.org/manual/en/dev/modeling/modifiers/generate/array.html
Short description of error
Several of the download links lead to errors:
No file by this name exists.
There are no pages that link to this file.
Exact steps for others to reproduce the error
Go to the above URL; download an example file. I tried the tentacle file, but I think others didn't work too. My guess is that the old wiki contents weren't fully moved over.