fix typo

src/common/sdk/pnp/web/_erc20-paymaster-configuration.mdx

@@ -2,7 +2,7 @@ import TabItem from "@theme/TabItem";
 import Tabs from "@theme/Tabs";
 
 When using an ERC-20 paymaster, ensure you include the approval transaction, as Web3Auth does not
-handle the approval internall.
+handle the approval internally.
 
 For Pimlico, you can specify the token you want to use in the paymasterContext. If you want to set
 up sponsorship policies, you can define those in the paymasterContext as well.