Fix misaligned roof in industrial center

[chaosvolt]

Summary

SUMMARY: Bugfixes "fix misaligned roof in industrial center"

Purpose of change

Tiny thing I spotted while testing some stuff:

Turned out that industrial_center_light_industry_roof was not aligned with the underlying building, so it'd have an overhanging bit of roof in the back and auto-generated roof up front, plus visibly not appear aligned right with industrial_center_warehouse_roof.

Describe the solution

1. Adjust placement of empty space in industrial_center_light_industry_roof and fix up the shape to match properly.
2. Also tweaked a slight flaw in alignment for industrial_center_warehouse_roof.
3. Fixed gutter placement in industrial_center_loading_bay_roof.

Describe alternatives you've considered

Why contain it? s'cool

Testing

1. Checked affected file for syntax and lint errors.
2. Entered industrial center in compiled build to confirm it looked right:

Additional context