Tweak docstring

Author: gaurav-arya

src/TestUtils.jl

@@ -20,9 +20,9 @@ prior to calling this function.
 # Arguments
 
 - `array_constructor`: determines the `AbstractArray` implementation for
-which the correctness tests are run. It is assumed to be a callable object that
-takes in input arrays of type `Array` and return arrays of the desired type for
-testing: this would most commonly be a constructor such as `Array` or `CuArray`.
+  which the correctness tests are run. It is assumed to be a callable object that
+  takes in input arrays of type `Array` and return arrays of the desired type for
+  testing. For example, this can be a constructor such as `Array` or `CUDA.CuArray`.
 - `test_real=true`: whether to test real-to-complex and complex-to-real FFTs.
 - `test_inplace=true`: whether to test in-place plans. 
 """