docs: Add gopls install instructions (#18919)

docs/src/languages/go.md

@@ -5,6 +5,37 @@ Go support is available natively in Zed.
 - Tree Sitter: [tree-sitter/tree-sitter-go](https://github.com/tree-sitter/tree-sitter-go)
 - Language Server: [golang/tools/tree/master/gopls](https://github.com/golang/tools/tree/master/gopls)
 
+## Setup
+
+We recommend installing gopls via go's package manager and not via Homebrew or your Linux distribution's package manager.
+
+1. Make sure you have uninstalled any version of gopls you have installed via your package manager:
+
+```sh
+# MacOS homebrew
+brew remove gopls
+# Ubuntu
+sudo apt-get remove gopls
+sudo snap remove gopls
+# Arch
+sudo pacman -R gopls
+```
+
+2. Install/Update `gopls` to the latest version using the go module tool:
+
+```sh
+go install golang.org/x/tools/gopls@latest
+```
+
+3. Ensure that `gopls` is in your path:
+
+```sh
+which gopls
+gopls version
+```
+
+If `gopls` is not found you will likely need to add `export PATH="$PATH:$HOME/go/bin"` to your `.zshrc` / `.bash_profile`
+
 ## Inlay Hints
 
 Zed sets the following initialization options for inlay hints: