add fjord override flags

added fjord override flag info to both consensus configurationa and execution configuration

Author: ZakAyesh

pages/builders/node-operators/configuration/consensus-config.mdx

@@ -334,6 +334,16 @@ Manually specify the ecotone fork timestamp, overriding the bundled setting. The
   <Tabs.Tab>`OP_NODE_OVERRIDE_ECOTONE=0`</Tabs.Tab>
 </Tabs>
 
+### override.fjord
+
+Manually specify the fjord fork timestamp, overriding the bundled setting. The default value is `0`.
+
+<Tabs items={['Syntax', 'Example', 'Environment Variable']}>
+  <Tabs.Tab>`--override.fjord=<value>`</Tabs.Tab>
+  <Tabs.Tab>`--override.fjord=0`</Tabs.Tab>
+  <Tabs.Tab>`OP_NODE_OVERRIDE_FJORD=0`</Tabs.Tab>
+</Tabs>
+
 ### p2p.advertise.ip
 
 The IP address to advertise in Discv5, put into the ENR of the node. This may also be a hostname/domain name to resolve to an IP.

pages/builders/node-operators/configuration/execution-config.mdx

@@ -639,6 +639,16 @@ Manually specify the Optimism Ecotone fork timestamp, overriding the bundled set
   <Tabs.Tab>`GETH_OVERRIDE_ECOTONE=0`</Tabs.Tab>
 </Tabs>
 
+#### override.fjord
+
+Manually specify the Optimism Fjord fork timestamp, overriding the bundled setting. The default value is `0`.
+
+<Tabs items={['Syntax', 'Example', 'Environment Variable']}>
+  <Tabs.Tab>`--override.fjord=<value>`</Tabs.Tab>
+  <Tabs.Tab>`--override.fjord=0`</Tabs.Tab>
+  <Tabs.Tab>`GETH_OVERRIDE_FJORD=0`</Tabs.Tab>
+</Tabs>
+
 #### `override.interop`
 
 Manually specify the Optimism Interop feature-set fork timestamp, overriding the bundled setting.