Fix typo in facilitator configuration function

Corrected a typo in the configuration function description.

Signed-off-by: Eiman <[email protected]>

Author: eabdelmoneim

apps/portal/src/app/payments/x402/page.mdx

@@ -43,7 +43,7 @@ const response = await fetchWithPay('https://api.example.com/paid-endpoint');
 
 To make your API calls payable, you can use any x402 middleware library like x402-hono, x402-next, x402-express, etc.
 
-Then, use the `facilitator` configuratino function settle transactions with your thirdweb server wallet gaslessly and pass it to the middleware.
+Then, use the `facilitator` configuration function to settle transactions with your thirdweb server wallet gaslessly and pass it to the middleware.
 
 Here's an example with Next.js: