docs: add zed to installation (#71)

Author: PJUllrich

pages/installation.md

@@ -74,6 +74,7 @@ appropriate binary name.
 7. [Vim + Vim-LSP](#vim--vim-lsp)
 8. [Helix](#helix)
 9. [Sublime Text](#sublime-text)
+10. [Zed](#zed)
 
 ### Vanilla Emacs with lsp-mode
 The emacs instructions assume you're using `use-package`, which you
@@ -275,3 +276,27 @@ You'll need to add a key called `"clients"` in the top-level `LSP.sublime-settin
 _note: you can name elixir-expert whatever you like, it's just for your own identification_
 
 Upon saving the configuration, LSP-Sublime should enable the new `elixir-expert` LSP server. Go into an Elixir file and you should now see `elixir-expert` in the lower left of the status bar. If not, invoke the command palette and select `LSP: Enable Language Server Globally/In Project` and it should run.
+
+### Zed
+
+Zed [supports Expert](https://zed.dev/docs/languages/elixir) through the [Elixir extension](https://github.com/zed-extensions/elixir).
+
+So, first install the extension and then update your `settings.json` to use Expert as language server:
+
+```json
+{
+  "languages": {
+    "Elixir": {
+      "language_servers": [
+        "expert",
+        "!elixir-ls",
+        "!next-ls",
+        "!lexical",
+        "..."
+      ]
+    }
+  }
+}
+```
+
+The Elixir extension will [download the latest Expert release](https://github.com/zed-extensions/elixir/blob/96fd0581d84cfac857a23c1351e2405836de39fd/src/language_servers/expert.rs#L65) and keep it updated. So, you don't need to manually download and update the expert release yourself.