docs: add swap router information (#1919)

site/docs/pages/buy/types.mdx

@@ -14,7 +14,13 @@ type BuyReact = {
     maxSlippage: number; // Maximum acceptable slippage for a swap (e.g., 3 for 3%). This is a percentage, not basis points.
   };
   experimental?: {
-    useAggregator: boolean; // Whether to use a DEX aggregator. (default: false)
+    /**
+     * Whether to use a DEX aggregator.
+     * true - 0x Aggregator
+     * false - Uniswap V3
+     * @default false
+     */
+    useAggregator: boolean;
   };
   isSponsored?: boolean; // An optional setting to sponsor swaps with a Paymaster. (default: false)
   onError?: (error: SwapError) => void; // An optional callback function that handles errors within the provider.

site/docs/pages/swap/swap.mdx

@@ -191,6 +191,15 @@ export default function SwapComponents() {
 The swap will execute and work out of the box when you implement the component in your own app.
 :::
 
+### Supported Swap Routers
+
+The `Swap` component supports two swap routers:
+
+- [Uniswap V3](https://app.uniswap.org/) (default)
+- [0x Aggregator](https://0x.org/)
+
+To use the 0x Aggregator, set the `experimental.useAggregator` prop to `true`.
+
 ### Sponsor gas with Paymaster
 
 To sponsor swap transactions for your users, toggle the Paymaster using the `isSponsored` prop.

site/docs/pages/swap/types.mdx

@@ -143,7 +143,13 @@ type SwapReact = {
     maxSlippage: number; // Maximum acceptable slippage for a swap (e.g., 3 for 3%). This is a percentage, not basis points;
   };
   experimental?: {
-    useAggregator: boolean; // Whether to use a DEX aggregator. (default: false)
+    /**
+     * Whether to use a DEX aggregator.
+     * true - 0x Aggregator
+     * false - Uniswap V3
+     * @default false
+     */
+    useAggregator: boolean;
   };
   isSponsored?: boolean; // An optional setting to sponsor swaps with a Paymaster. (default: false)
   onError?: (error: SwapError) => void; // An optional callback function that handles errors within the provider.