docs: fix secure documentation
docs: fix secure documentation

closes #43

expressjs/session,MadisonReed/session,wesleytodd/session,gabeio/session,cgcardona/session,cnwhy/session,sielay/session,jasonkarns/session,soulman-is-good/session,saighost/session,socialrank/express-session,mig1098/session,globesherpa/session,victorenator/session,danielgindi/session,Jpunt/session,hl198181/session,tianyk/express-session-research,fracmak/session,digitalartcrew/session,happysj/session,tianyk/express-session-review,aboutdotme/session,coolaj86/session