chore: move gas and timeout details to Engine FAQ

Author: arcoraven

apps/portal/src/app/engine/faq/page.mdx

@@ -1,3 +1,5 @@
+import { Callout } from "@doc";
+
 # FAQ
 
 ## About Engine
@@ -45,6 +47,51 @@ Here are three ways to determine when the job is mined:
   };
   ```
 
+### How do I override gas settings?
+
+To override the gas settings, set `txOverrides` in the request body for any write transaction.
+Each field is optional and will be estimated by Engine if omitted.
+
+Here's an example request body for a transfer transaction:
+```json
+{
+  // Arguments for a transfer transaction
+  "to": "0xA954fC66de1F90cFB4f29F0ABa391412406820B7",
+  "amount": "0.5",
+  
+  // 👇 Specify these overrides based on your chain's gas settings
+  txOverrides: {
+    // The limit of gas units to use for this transaction.
+    gas: "530000",
+    // The max fee (e.g. gas price) to use in wei.
+    maxFeePerGas: "1000000000",
+    // The max priority fee to use in wei.
+    maxPriorityFeePerGas: "1000000000",
+}
+```
+
+<Callout variant='warning' title="It is highly recommended to set a timeout when setting a maxFeePerGas.">
+
+Otherwise if gas prices don't fall, transactions may be in your queue indefinitely.
+
+</Callout>
+
+### How do I set a timeout on transactions?
+
+To Set the `txOverrides` 
+Engine will drop transactions if they are not sent before the timeout.
+Note: A transaction that is already sent may be mined after this timeout.
+
+```json
+{
+  // ...other arguments in the write transaction
+
+  // 👇 Specify this override. Here's an example of a 2 hour timeout.
+  txOverrides: {
+    timeoutSeconds: 7200,
+}
+```
+
 ### How do I customize my RPC?
 
 Use [Update Chain Configuration](https://redocly.github.io/redoc/?url=https://demo.web3api.thirdweb.com/json#tag/Configuration/operation/updateChainsConfiguration) to override a chain's settings.

apps/portal/src/app/engine/features/contracts/page.mdx

@@ -83,24 +83,6 @@ To send native tokens to a payable method (e.g. ETH on Ethereum), set `txOverrid
 }
 ```
 
-### Override gas settings
-
-To override the gas settings for your transaction, set `txOverrides` in the request body to any write transaction. Each of these fields are optional and will be estimated by Engine if omitted.
-
-```json
-{
-  functionName: "...",
-  args: [ ... ],
-  txOverrides: {
-    // The limit of gas units to use for this transaction.
-    gas: "530000",
-    // The max fee (e.g. gas price) to use in wei.
-    maxFeePerGas: "1000000000",
-    // The max priority fee to use in wei.
-    maxPriorityFeePerGas: "1000000000",
-}
-```
-
 ## Read from a contract
 
 ```ts