ci: update reference docs (withastro#4163)

Co-authored-by: delucis <[email protected]>
Co-authored-by: Elian ☕️ <[email protected]>

src/content/docs/en/reference/configuration-reference.mdx

@@ -913,3 +913,26 @@ and enable animations with the `transition:animate` directive.
 ```
 
 
+### experimental.optimizeHoistedScript
+
+<p>
+
+**Type:** `boolean`<br />
+**Default:** `false`<br />
+<Since v="2.10.4" />
+</p>
+
+Prevents unused components' scripts from being included in a page unexpectedly.
+The optimization is best-effort and may inversely miss including the used scripts. Make sure to double-check your built pages
+before publishing.
+Enable hoisted script analysis optimization by adding the experimental flag:
+
+```js
+{
+	experimental: {
+		optimizeHoistedScript: true,
+	},
+}
+```
+
+