attempt to fix sitemap error

[gdams]

@jimmyn this might fix things (it's hard to test without any CI tests)

[jimmyn]

This is not going to work, I've tested it already, check this issue - https://github.com/microapps/gatsby-plugin-react-i18next/issues/143#issuecomment-1219277484

I'm using https://www.npmjs.com/package/yalc to test it in the example, it's quite useful

[gdams]

okay @jimmyn I think I've got it working now

[jimmyn]

@gdams thanks!