mat: fix Row doc comment
@@ -238,7 +238,7 @@ func Col(dst []float64, j int, a Matrix) []float64 {
return dst
}
-// Row copies the elements in the jth column of the matrix into the slice dst.
+// Row copies the elements in the ith row of the matrix into the slice dst.
// The length of the provided slice must equal the number of columns, unless the
// slice is nil in which case a new slice is first allocated.
func Row(dst []float64, i int, a Matrix) []float64 {
