[feat] updated the documentation for deployment to point to new next.js Docker official guide. (#94185)
## What?
Updates the Docker section in the deploying guide.
- Rewrites the Docker intro sentence to be more concise and adds a link
to Docker's official [React.js
guide](https://docs.docker.com/guides/reactjs) alongside the existing
[Next.js guide](https://docs.docker.com/guides/nextjs).
## Why?
Add reference to new Next.js Docker guide in the deploying docs.
## How?
Documentation-only change. No code changes.
CC: @icyJoseph