chore: add Next LS to the README

Author: mhanberg

README.md

@@ -4,13 +4,14 @@
 [![Visual Studio Marketplace Installs](https://img.shields.io/visual-studio-marketplace/i/elixir-tools.elixir-tools)](https://marketplace.visualstudio.com/items?itemName=elixir-tools.elixir-tools)
 [![GitHub Discussions](https://img.shields.io/github/discussions/elixir-tools/discussions)](https://github.com/orgs/elixir-tools/discussions)
 
-The official [elixir-tools](https://github.com/elixir-tools) extension for VSCode!
+The official [elixir-tools](https://github.com/elixir-tools) extension for Visual Studio Code!
 
 elixir-tools.vscode provides support for:
 
 * Filetype detection for .ex and .exs Elixir files
 * Syntax highlight for Elixir
-* Credo Language Server
+* [Next LS](https://www.elixir-tools.dev/next-ls) (disabled by default, will become enabled by default once it reaches feature parity with Elixir LS).
+* [Credo Language Server](https://github.com/elixir-tools/credo-language-server)
 
 ## Install
 
@@ -23,5 +24,5 @@ Install from the extension [marketplace](https://marketplace.visualstudio.com/it
 $ npx vsce package
 
 # install the .vsix package
-$ code --install-extension elixir-tools-0.0.6.vsix --force
+$ code --install-extension elixir-tools-X.X.X.vsix --force
 ```