Update apps/portal/src/app/connect/pay/fees/page.mdx

Co-authored-by: graphite-app[bot] <96075541+graphite-app[bot]@users.noreply.github.com>
Signed-off-by: samina <[email protected]>

Author: saminacodes

apps/portal/src/app/connect/pay/fees/page.mdx

@@ -20,7 +20,7 @@ This fee is independent of network gas fees and does not fluctuate.
 
 #### Setting fees using buy or sell
 
-You can configure who pays the protocol fee for buy or sell transactions by specifing the input amount `sell` or `buy`.
+You can configure who pays the protocol fee for buy or sell transactions by specifying the input amount `sell` or `buy`.
 
 See full reference for [`buy`](https://portal.thirdweb.com/references/typescript/v5/buy/prepare) and [`sell`](https://portal.thirdweb.com/references/typescript/v5/sell/prepare).