docs: [] update deployment + template image (#127)

Author: cf-remylenoir

README.md

@@ -233,12 +233,11 @@ $~$
 
 The Starter Template can be deployed to your hosting provider of choice.
 
-We offer integrations with Vercel and Netlify to speed up the process (by setting-up the GitHub repository and the necessary environment variables keys in the hosting provider space), you can use the deploy buttons below.
+We suggest the Vercel integration to speed up the process by clicking the deploy button below. The GitHub repository and the necessary environment variables keys are pre-configured in the hosting provider space.
 
-| Vercel  | Netlify  |
-|---|---|
-| [![Deploy with Vercel](https://vercel.com/button)](https://vercel.com/new/clone?repository-url=https%3A%2F%2Fgithub.com%2Fcontentful%2Ftemplate-marketing-webapp-nextjs&env=NEXT_PUBLIC_CONFIG_CONTENTFUL_SPACE_ID,NEXT_PUBLIC_CONFIG_CONTENTFUL_DELIVERY_API_TOKEN,NEXT_PUBLIC_CONFIG_CONTENTFUL_PREVIEW_API_TOKEN&envDescription=API%20Keys%20needed%20for%20the%20application&envLink=https%3A%2F%2Fgithub.com%2Fcontentful%2Ftemplate-marketing-webapp-nextjs%23environment-variables) | [![Deploy to Netlify Button](https://www.netlify.com/img/deploy/button.svg)](https://app.netlify.com/start/deploy?repository=https%3A%2F%2Fgithub.com%2Fcontentful%2Ftemplate-marketing-webapp-nextjs#NEXT_PUBLIC_CONFIG_CONTENTFUL_SPACE_ID=&NEXT_PUBLIC_CONFIG_CONTENTFUL_DELIVERY_API_TOKEN=&NEXT_PUBLIC_CONFIG_CONTENTFUL_PREVIEW_API_TOKEN=) |
-| [Environment variables docs](https://vercel.com/docs/concepts/projects/environment-variables) | [Environment variables docs](https://docs.netlify.com/environment-variables/overview/) |
+[![Deploy with Vercel](https://vercel.com/button)](https://vercel.com/new/clone?repository-url=https%3A%2F%2Fgithub.com%2Fcontentful%2Ftemplate-marketing-webapp-nextjs&env=NEXT_PUBLIC_CONFIG_CONTENTFUL_SPACE_ID,NEXT_PUBLIC_CONFIG_CONTENTFUL_DELIVERY_API_TOKEN,NEXT_PUBLIC_CONFIG_CONTENTFUL_PREVIEW_API_TOKEN&envDescription=API%20Keys%20needed%20for%20the%20application&envLink=https%3A%2F%2Fgithub.com%2Fcontentful%2Ftemplate-marketing-webapp-nextjs%23environment-variables)
+
+[Vercel's environment variables docs](https://vercel.com/docs/concepts/projects/environment-variables)
 
 Make sure to add the necessary [environment variables values](./README.md#environment-variables) to the hosting provider environment variables.