Add server usage section for user profile query

Added server usage example for user profile query.

Author: KipzonderKop101

src/routes/solid-router/reference/data-apis/query.mdx

@@ -101,3 +101,22 @@ const getUserProfileQuery = query(async (userId: string) => {
 	return json;
 }, "userProfile");
 ```
+
+### Server usage
+```tsx
+import { query } from "@solidjs/router";
+
+const getUserProfileQuery = query(async (userId: string) => {
+	"use server";
+
+	const response = await fetch(
+		`https://api.example.com/users/${encodeURIComponent(userId)}`
+	);
+	const json = await response.json();
+
+	if (!response.ok) {
+		throw new Error(json?.message ?? "Failed to load user profile.");
+	}
+
+	return json;
+}, "userProfile");