DOC: Replace broken link with intersphinx [ci skip]
DOC: Replace broken link with intersphinx [ci skip]

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