use f-string syntax in index
use f-string syntax in index

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