Fix wcsapi remote data doctest failure.
Fix wcsapi remote data doctest failure.

saimn/astropy,astropy/astropy,mhvk/astropy,pllim/astropy,astropy/astropy,stargaser/astropy,mhvk/astropy,larrybradley/astropy,MSeifert04/astropy,lpsinger/astropy,mhvk/astropy,StuartLittlefair/astropy,saimn/astropy,lpsinger/astropy,StuartLittlefair/astropy,dhomeier/astropy,aleksandr-bakanov/astropy,mhvk/astropy,astropy/astropy,larrybradley/astropy,larrybradley/astropy,lpsinger/astropy,lpsinger/astropy,larrybradley/astropy,saimn/astropy,larrybradley/astropy,StuartLittlefair/astropy,MSeifert04/astropy,dhomeier/astropy,StuartLittlefair/astropy,aleksandr-bakanov/astropy,dhomeier/astropy,MSeifert04/astropy,pllim/astropy,dhomeier/astropy,astropy/astropy,pllim/astropy,aleksandr-bakanov/astropy,MSeifert04/astropy,stargaser/astropy,pllim/astropy,aleksandr-bakanov/astropy,astropy/astropy,pllim/astropy,StuartLittlefair/astropy,saimn/astropy,dhomeier/astropy,saimn/astropy,stargaser/astropy,stargaser/astropy,lpsinger/astropy,mhvk/astropy