docs: use Node 20 on Netlify

yyx990803 · yyx990803 · commit 733fab8548e3 · 2023-11-30T14:01:46.000+08:00
diff --git a/netlify.toml b/netlify.toml
@@ -1,5 +1,5 @@
 [build.environment]
-  NODE_VERSION = "18"
+  NODE_VERSION = "20"
   # don't need playwright for docs build
   PLAYWRIGHT_SKIP_BROWSER_DOWNLOAD = "1"
 [build]
