add examples to sidebar (#2247)

Author: mbostock

docs/.vitepress/config.ts

@@ -60,7 +60,8 @@ export default defineConfig({
         items: [
           {text: "What is Plot?", link: "/what-is-plot"},
           {text: "Why Plot?", link: "/why-plot"},
-          {text: "Getting started", link: "/getting-started"}
+          {text: "Getting started", link: "/getting-started"},
+          {text: "Examples", link: "https://observablehq.com/@observablehq/plot-gallery"}
         ]
       },
       {

docs/features/plots.md

@@ -1,3 +1,9 @@
+---
+prev:
+  text: Getting started
+  link: /getting-started
+---
+
 <script setup>
 
 import * as Plot from "@observablehq/plot";

docs/getting-started.md

@@ -1,3 +1,9 @@
+---
+next:
+  text: Plots
+  link: /features/plots
+---
+
 <script setup>
 
 import * as Plot from "@observablehq/plot";