fix: various fixes

Author: datasalaryman

apps/docs/content/docs/en/payments/agentic-payments.mdx

@@ -56,7 +56,6 @@ topup your wallet:
 
 ```bash
 pay setup
-pay topup
 ```
 
 ## The x402 Protocol

apps/docs/content/docs/en/payments/subscriptions/pay-sh.mdx

@@ -27,7 +27,6 @@ topup your wallet:
 
 ```bash
 pay setup
-pay topup
 ```
 
 ## Subscriptions as a client
@@ -80,7 +79,7 @@ to it every 30 days.
 You can try it by running the following command:
 
 ```bash
-pay --sandbox server start monthly.yml
+pay server start monthly.yml
 ```
 
 You can test that the subscriptions work by running the following commands as a