Document elm-language-server not supporting linked_edits correctly (#23616)

docs/src/languages/elm.md

@@ -5,7 +5,21 @@ Elm support is available through the [Elm extension](https://github.com/zed-exte
 - Tree Sitter: [elm-tooling/tree-sitter-elm](https://github.com/elm-tooling/tree-sitter-elm)
 - Language Server: [elm-tooling/elm-language-server](https://github.com/elm-tooling/elm-language-server)
 
-## Setting up `elm-language-server`
+## Setup
+
+Zed support for Elm requires installation of `elm`, `elm-format`, `elm-review` and `elm`.
+
+1. [Install Elm](https://guide.elm-lang.org/install/elm.html) (or run `brew install elm` on macOS).
+2. Install `elm-review` to support code linting:
+   ```sh
+   npm install elm-review --save-dev
+   ```
+3. Install `elm-format` to support automatic formatting
+   ```sh
+   npm install -g elm-format
+   ```
+
+## Configuring `elm-language-server`
 
 Elm language server can be configured in your `settings.json`, e.g.:
 
@@ -23,8 +37,16 @@ Elm language server can be configured in your `settings.json`, e.g.:
 }
 ```
 
-<!--
-TBD: Add example of how to install `elm-format` and `elm-review`.
--->
-
 `elm-format`, `elm-review` and `elm` need to be installed and made available in the environment or configured in the settings. See the [full list of server settings here](https://github.com/elm-tooling/elm-language-server?tab=readme-ov-file#server-settings).
+
+## Known Issues
+
+There is an [upstream issue](https://github.com/elm-tooling/elm-language-server/issues/1311) with `elm-language-server` incorrectly supporting `linked_edits`. It is recommend you disable that feature in your Zed settings.json with:
+
+```
+  "languages": {
+    "Elm": {
+      "linked_edits": false
+    }
+  }
+```