* add images for fund and pay tutorials
* add onramp config troubleshooting steps
* add images for pay and fund tutorials
* add images to pay tutorial
* update metadata for pay + fund tutorials
* use replace dapp with app
* update title for better SEO
* add callouts
* crop image and add markups
* add details to OnchainkitProviders step
* call out the changes needed for the config.ts step
* add hyperlink for react docs
