Some TF vertical slabs are inconsistently named

[saltyseadoggo]

Several of this mod's vertical slabs for the Twilight Forest mod are named inconsistently with other blocks made of their wood types:

• Dark Vertical Slab instead of Darkwood Vertical Slab
• Time Vertical Slab instead of Timewood Vertical Slab
• Transformation Vertical Slab instead of Transwood Vertical Slab
• Mining Vertical Slab instead of Minewood Vertical Slab
• Sorting Vertical Slab instead of Sortingwood Vertical Slab