Adding the flake8 comment to the PR template [skip ci]
Adding the flake8 comment to the PR template [skip ci]

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