docs: update neovim's setup section (#749)

docs/tinymist/frontend/neovim.typ

@@ -23,17 +23,42 @@ See #link("https://github.com/Myriad-Dreamin/tinymist#features")[Tinymist Featur
   }
   ```
 
-== Minimal Setup: LazyVim as an Example
-<minimal-setup-lazyvim-as-an-example>
-This section shows you a minimal way to setup tinymist in Neovim (LazyVim).
+== Setup
 
-+ Copy or merge the #link("https://github.com/Myriad-Dreamin/tinymist/tree/main/editors/neovim/config/autocmds.lua")[Autocmds file] and #link("https://github.com/Myriad-Dreamin/tinymist/tree/main/editors/neovim/plugins/tinymist.lua")[Plugin file] to corresponding paths into `~/.config/nvim/`.
-
-+ Check and restart Neovim.
+This section shows you a minimal way to setup tinymist in #link("https://www.lazyvim.org/")[LazyVim]. For other distros, we also bring some tips for you.
 
 // todo: heading link support
 Please see #md-alter(link(<neovim-extra-settings>)[Extra Settings], () => link("#extra-settings")[Extra Settings]) for more configuration.
 
+=== Setup for #link("https://www.lazyvim.org/")[LazyVim]
+
+Copy or merge the two files to corresponding paths into `~/.config/nvim/`.
+
+- #link("https://github.com/Myriad-Dreamin/tinymist/tree/main/editors/neovim/config/autocmds.lua")[Autocmds file] will help associate `.typ` file extension to `typst` filetype.
+- #link("https://github.com/Myriad-Dreamin/tinymist/tree/main/editors/neovim/plugins/tinymist.lua")[Plugin file] will help start tinymist for buffers with the `typst` filetype.
+
+Then, check and restart Neovim.
+
+=== Setup for #link("https://github.com/AstroNvim")[AstroVim]
+
+AstroNvim now uses tinymist by default. Please check the #link("https://github.com/AstroNvim/astrocommunity/tree/main/lua/astrocommunity/pack/typst")[setup script].
+
+=== Setup for #link("https://github.com/neoclide/coc.nvim")[coc.nvim]
+
+You can edit the `coc-settings.json` by executing `:CocConfig`:
+
+```json
+{
+  "languageserver": {
+    "tinymist": {
+      "command": "tinymist",
+      "filetypes": ["typst"],
+      "settings": { ... }
+    }
+  }
+}
+```
+
 == Tips
 <tips>
 === Working with Multiple-File Projects
@@ -98,23 +123,6 @@ return {
 
 See #link("https://github.com/Myriad-Dreamin/tinymist/tree/main/editors/neovim/Configuration.md")[Tinymist Server Configuration] for references.
 
-=== Configuring Language Server for COC
-<configuring-coc-language-server>
-To configure language server for #link("https://github.com/neoclide/coc.nvim")[coc.nvim], you can edit the `coc-settings.json` by executing `:CocConfig`:
-
-```json
-"languageserver": {
-  "tinymist": {
-    "command": "tinymist",
-    "filetypes": ["typst"],
-    "settings": {
-      "exportPdf": "onType",
-      "outputPath" = "$root/target/$dir/$name",
-    }
-  }
-}
-```
-
 === Configuring Folding Range for Neovim Client
 <configuring-folding-range-for-neovim-client>
 Enable LSP-based folding range with `kevinhwang91/nvim-ufo`: