Update CPU specification for validator node

Signed-off-by: Guoteng Rao <3603304+grao1991@users.noreply.github.com>

Author: grao1991

src/content/docs/network/nodes/validator-node/node-requirements.mdx

@@ -46,9 +46,9 @@ satisfy the requirements outlined below).
 
 | Component            | Specification                                                                   |
 | -------------------- | --------------------------------------------------------------------------------|
-| CPU                  | 48 threads,	5th Gen AMD EPYC (Turin) or 5th/6th Gen Intel Xeon                   |
+| CPU                  | 48 threads,	5th Gen AMD EPYC (Turin) or 6th Gen Intel Xeon (Granite Rapids)    |
 | Memory               | 128GB RAM                                                                       |
-| Storage              | 3.0 TB Enterprise NVMe SSD with at least 60K IOPS and 600MiB/s bandwidth                        |
+| Storage              | 3.0 TB Enterprise NVMe SSD with at least 60K IOPS and 600MiB/s bandwidth        |
 | Networking Bandwidth | 1Gbps                                                                           |
 
 **Example Machine Types on Various Clouds**