`include` and `IncludeCS` should not be treated as `require`

[b0mbie]

This is how the page for include describes its first argument, fileName:

The name of the script to be executed. The path must be either relative to the current file, or be an absolute path (relative to and excluding the lua/ folder).

This argument is a path, which does not follow the require path format, where dots are separators.
If include is treated like Lua 5.1's dofile, it would be correct in this case.

[luttje]

Edit: awesome! I just now noticed you made a PR as well, much appreciated 👍

[luttje]

@all-contributors add @b0mbie for bug

[allcontributors]

@luttje

I've put up a pull request to add @b0mbie! 🎉