Update docs/pos/payments/onramps/onramps-usdc.md

Co-authored-by: Copilot <[email protected]>

Author: cooganb

docs/pos/payments/onramps/onramps-usdc.md

@@ -2,7 +2,7 @@
 
 ## Prerequisites
 
-	* Use (Circle’s sandbox environment)[https://app-sandbox.circle.com/signin] for development and testing. Production requires a separate API key and account setup.   
+	* Use (Circle’s sandbox environment)[https://app-sandbox.circle.com/signin] for development and testing. Production requires a separate API key and account setup.  
 	* Authenticate HTTP requests via (the Authorization: Bearer YOUR_API_KEY header.)[https://developers.circle.com/circle-mint/getting-started-with-the-circle-apis?utm_source=chatgpt.com#api-key-authentication]
 	* [Circle SDK](https://developers.circle.com/circle-mint/circle-sdks)
 !!! info