chore(showcase): Add "Sindhuka.org" (#13957)
chore(showcase): Add "Sindhuka.org" (#13957)

* Adding "Sindhuka.org"

Adding sindhuka.org to the showcase

* fix indentation


Co-authored-by: Lennart <074ba1c0efc36927866875b17be4fa06eb80e472@gmail.com>
gatsbyjs/gatsby,ChristopherBiscardi/gatsby,gatsbyjs/gatsby,ChristopherBiscardi/gatsby,ChristopherBiscardi/gatsby,ChristopherBiscardi/gatsby,gatsbyjs/gatsby,gatsbyjs/gatsby,gatsbyjs/gatsby,gatsbyjs/gatsby