Fix flake8
Fix flake8

Didn't realize flake8 runs on the doc examples as well.

numba/numba,IntelLabs/numba,seibert/numba,cpcloud/numba,numba/numba,stuartarchibald/numba,gmarkall/numba,stuartarchibald/numba,stonebig/numba,seibert/numba,stuartarchibald/numba,seibert/numba,stonebig/numba,cpcloud/numba,stonebig/numba,cpcloud/numba,gmarkall/numba,gmarkall/numba,gmarkall/numba,IntelLabs/numba,numba/numba,gmarkall/numba,IntelLabs/numba,stuartarchibald/numba,cpcloud/numba,IntelLabs/numba,seibert/numba,cpcloud/numba,stuartarchibald/numba,stonebig/numba,seibert/numba,IntelLabs/numba,numba/numba,numba/numba,stonebig/numba