incorrect cohomological shift for modules

```m2
i1 : needsPackage "Complexes";

i2 : S = QQ[x];

i3 : S^1[1]

      1
o3 = S

     1

o3 : Complex

i4 : (complex S^1)[1]

      1
o4 = S

     -1

o4 : Complex
```

cc: @mikestillman @ggsmith 