Fixed an inaccurate comment
Fixed an inaccurate comment

While it's true that older Pythons do not do (critical) TLS validation by default, that's not what this warning is about.
jsha/letsencrypt,mitnk/letsencrypt,bsmr-misc-forks/letsencrypt,martindale/letsencrypt,wteiken/letsencrypt,TheBoegl/letsencrypt,jtl999/certbot,thanatos/lets-encrypt-preview,twstrike/le_for_patching,VladimirTyrin/letsencrypt,twstrike/le_for_patching,lmcro/letsencrypt,thanatos/lets-encrypt-preview,martindale/letsencrypt,bsmr-misc-forks/letsencrypt,kuba/letsencrypt,goofwear/letsencrypt,stweil/letsencrypt,TheBoegl/letsencrypt,jsha/letsencrypt,letsencrypt/letsencrypt,DavidGarciaCat/letsencrypt,jtl999/certbot,wteiken/letsencrypt,dietsche/letsencrypt,kuba/letsencrypt,goofwear/letsencrypt,stweil/letsencrypt,DavidGarciaCat/letsencrypt,letsencrypt/letsencrypt,brentdax/letsencrypt,xgin/letsencrypt,mitnk/letsencrypt,lmcro/letsencrypt,VladimirTyrin/letsencrypt,xgin/letsencrypt,dietsche/letsencrypt,brentdax/letsencrypt