fix twitter card image
fix twitter card image

gastrovec/gastrovec.github.io,wilburyang/wilburyang.github.io,nelsonlho/nelsonlho.github.io,nelsonlho/nelsonlho.github.io,wilburyang/wilburyang.github.io,bk2dcradle/accent,clojure-korea/clojure.kr,brian4286/brian4286.github.io