Update TODO to reflect AMD and fix typo (#270)

Co-authored-by: Katharine Hyatt <katharine.s.hyatt@gmail.com>
[skip ci]

Author: kshyatt

src/auxiliary/linalg.jl

@@ -49,8 +49,8 @@ const SVDAlg = Union{SVD,SDD}
 # Matrix algebra: entrypoint for calling matrix methods from within tensor implementations
 #------------------------------------------------------------------------------------------
 module MatrixAlgebra
-# TODO: all methods tha twe define here will need an extended version for CuMatrix in the
-# CUDA package extension.
+# TODO: all methods that we define here will need an extended version for CuMatrix/ROCMatrix in the
+# CUDA/AMD package extension.
 
 # TODO: other methods to include here:
 # mul! (possibly call matmul! instead)