Override prismjs setting in example:using-remark (#20862)
Override prismjs setting in example:using-remark (#20862)

* Override prismjs setting in example:using-remark

* Restore changes in commit 9aefd4e

* Add inline code highlighting

Co-authored-by: gatsbybot <313a651c59fdaade90d152972001707d94b0975c@gmail.com>
gatsbyjs/gatsby,gatsbyjs/gatsby,gatsbyjs/gatsby,gatsbyjs/gatsby,gatsbyjs/gatsby,gatsbyjs/gatsby