docs: update storage requirements (250GB min, 500GB recommended)

Author: EchoBT

README.md

@@ -375,8 +375,8 @@ The validator will auto-connect to `bootnode.platform.network` and sync.
 |----------|---------|-------------|
 | **CPU** | 4 vCPU | 8 vCPU |
 | **RAM** | 16 GB | 32 GB |
-| **Storage** | 100 GB SSD | 200 GB NVMe |
-| **Network** | 100 Mbps | 1 Gbps |
+| **Storage** | 250 GB SSD | 500 GB NVMe |
+| **Network** | 100 Mbps | 100 Mbps |
 
 > **Note**: Hardware requirements may increase over time as more challenges are added to the network. Each challenge runs in its own Docker container and may have specific resource needs. Monitor your validator's resource usage and scale accordingly.