Update README files

Author: cknitt

templates/rescript-template-basic/README.md

@@ -2,7 +2,7 @@
 
 - [Installation](../../README.md)
 
-The only official ReScript starter template.
+Official ReScript starter template.
 
 ## Installation
 

templates/rescript-template-nextjs/README.md

@@ -5,7 +5,7 @@
 This is a NextJS based template with following setup:
 
 - Full Tailwind v3 config & basic css scaffold (+ production setup w/ purge-css & cssnano)
-- [ReScript](https://rescript-lang.org) + React
+- [ReScript](https://rescript-lang.org) + [Core](https://github.com/rescript-association/rescript-core) + React
 - Some ReScript Bindings for Next to get you started
 - Preconfigured Dependencies: `@rescript/react`
 

templates/rescript-template-vite/README.md

@@ -4,7 +4,7 @@
 
 This is a Vite-based template with following setup:
 
-- [ReScript](https://rescript-lang.org) 11.0 with @rescript/react and JSX 4 automatic mode
+- [ReScript](https://rescript-lang.org) 11.0 with @rescript/react, [Core](https://github.com/rescript-association/rescript-core) and JSX v4
 - ES6 modules (ReScript code compiled to `.res.mjs` files)
 - Vite 4 with React Plugin (Fast Refresh)
 - Tailwind 3