[Docs] fix overlap of ')' into 2nd col of Tensor / CUDATensor tab (#173)
[Docs] fix overlap of ')' into 2nd col of Tensor / CUDATensor tab (#173)

Fixes the overlap of the closing parenthesis into the Tensor column of
"Higher-order functions (map, apply, reduce, fold)"
in the table comparing Tensor and CudaTensor.
mratsim/Arraymancer,mratsim/Arraymancer