Update docs/pos/how-to/smart-contracts/quicknode.md

Co-authored-by: Dra Murphy <149679879+kmurphypolygon@users.noreply.github.com>

Author: hsutaiyu

docs/pos/how-to/smart-contracts/quicknode.md

@@ -133,7 +133,7 @@ Copy the address of your account which we generated in this tutorial, paste it i
 
 ![img](../../../img/pos/faucet.png)
 
-## Deploying your Smart Contract
+## Deploying your smart contract
 
 Before deploying the contract, you need to compile it using: