Fixed header markup in /blog/forums#399

shahmishal merged 1 commit intoswiftlang:mainswiftlang/swift-org-website:mainfrom

natikgadzhi:content/blog/fix-2018-01-19-forums-headersnatikgadzhi/swift-org-website:content/blog/fix-2018-01-19-forums-headersCopy head branch name to clipboard