docs : Fix wrong example of typescript config (#16165)
docs : Fix wrong example of typescript config (#16165)

* Docs : Fix wrong exemple of typescript config 

ixed the webpack.config.js example of the typescript storybook version.

* Prefer diff for typescript exemple

* chore: format

gatsbyjs/gatsby,gatsbyjs/gatsby,gatsbyjs/gatsby,gatsbyjs/gatsby,gatsbyjs/gatsby,gatsbyjs/gatsby