Fix docstring (#513)

Author: MilesCranmer

src/device/abstractarray.jl

@@ -10,7 +10,7 @@ export AbstractDeviceArray
 
 Supertype for `N`-dimensional GPU arrays (or array-like types) with elements of type `T`.
 Instances of this type are expected to live on the device, see [`AbstractGPUArray`](@ref)
-for device-side objects.
+for host-side objects.
 """
 abstract type AbstractDeviceArray{T, N} <: DenseArray{T, N} end