Update overview.rst
Update overview.rst

@sklam as discussed, please merge thanks.
seibert/numba,seibert/numba,IntelLabs/numba,jriehl/numba,seibert/numba,cpcloud/numba,sklam/numba,seibert/numba,gmarkall/numba,numba/numba,IntelLabs/numba,cpcloud/numba,IntelLabs/numba,stuartarchibald/numba,seibert/numba,stuartarchibald/numba,stuartarchibald/numba,sklam/numba,sklam/numba,cpcloud/numba,jriehl/numba,stuartarchibald/numba,gmarkall/numba,jriehl/numba,IntelLabs/numba,jriehl/numba,gmarkall/numba,stonebig/numba,sklam/numba,gmarkall/numba,numba/numba,stonebig/numba,numba/numba,stonebig/numba,sklam/numba,numba/numba,numba/numba,gmarkall/numba,stonebig/numba,stuartarchibald/numba,stonebig/numba,jriehl/numba,cpcloud/numba,cpcloud/numba,IntelLabs/numba