docs: merge Polygon warning and disk figures note into one callout

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: Bloxster

docs/site/docs/get-started/hardware-requirements.mdx

@@ -45,11 +45,7 @@ The amount of disk space recommended and RAM you need depends on the [sync mode]
 </TabItem>
 <TabItem value="polygon" label="Polygon">
 :::warning
-The final release series of Erigon that officially supports Polygon is 3.1.\*. For the software supported by Polygon, please refer to the link: [https://github.com/0xPolygon/erigon/releases](https://github.com/0xPolygon/erigon/releases).
-:::
-
-:::note
-Disk usage figures for Polygon are from September 2025 and are no longer automatically updated.
+The final release series of Erigon that officially supports Polygon is 3.1.\*. For the software supported by Polygon, please refer to the link: [https://github.com/0xPolygon/erigon/releases](https://github.com/0xPolygon/erigon/releases). Disk usage figures below are from September 2025 and are no longer automatically updated.
 :::
 
 | **Sync Mode**  | **Current Disk Usage** | **Disk Size (Recommended)** | **RAM (Required)** | **RAM (Recommended)** |