The name of the Redstone Wire (block.minecraft.redstone_wire) is also used for the item form.
In 1.12 there was a distinction between the block and the item:

tile.redstoneDust.name = Redstone Dust
item.redstone.name = Redstone

But in 1.13 Redstone Dust is used for both:

block.minecraft.redstone_wire = Redstone Dust
item.minecraft.redstone = Redstone

Apart from the said above, it could be better to keep the name Restone Dust for the item form since it's showing a pile of dust and Redstone Wire for the block form.