fix(www): removing section in "Converting a Starter to a Theme" (#23198)
fix(www): removing section in "Converting a Starter to a Theme" (#23198)

* fix(www): removing section in "Converting a Starter to a Theme"

* Bringing back sorucing pages section upon reccomendations
gatsbyjs/gatsby,gatsbyjs/gatsby,gatsbyjs/gatsby,gatsbyjs/gatsby,gatsbyjs/gatsby,gatsbyjs/gatsby