fixed doctest in asymmetries
fixed doctest in asymmetries

jlaura/pysal,pysal/pysal,weikang9009/pysal,sjsrey/pysal_core,spreg-git/pysal,dfolch/pysal,ljwolf/pysal_core,ljwolf/pysal,pastephens/pysal,sjsrey/pysal,pedrovma/pysal,pastephens/pysal,ljwolf/pysal,lixun910/pysal,schmidtc/pysal,pastephens/pysal,chhao91/pysal,ljwolf/pysal_core,lixun910/pysal,lixun910/pysal,schmidtc/pysal,jlaura/pysal,TaylorOshan/pysal,lanselin/pysal,TaylorOshan/pysal,jlaura/pysal,nathania/pysal,darribas/pysal,ljwolf/pysal_core,hasecbinusr/pysal,badjr/pysal,chhao91/pysal,hasecbinusr/pysal,badjr/pysal,spreg-git/pysal,sjsrey/pysal_core,TaylorOshan/pysal,sjsrey/pysal_core,ljwolf/pysal,nathania/pysal,dfolch/pysal,darribas/pysal,hasecbinusr/pysal