also capitalise singular UTXO

docs/smart-contracts/overview.md

@@ -33,7 +33,7 @@ Important to note here is that smart contracts heavily rely on the datum attache
 
 ### On-Chain (Validator scripts)
 
-Validator scripts are executed automatically when a utxo residing at the address of the script is attempted to be moved by a transaction. These scripts take a transaction as its input and then outputs either true or false depending on whether the transaction is valid or not according to your rules/logic as defined in the script - thus blocking or allowing a transaction to succeed. If you are moving multiple UTXOs residing on the same script address, the validator-script will run once for each utxo. This script execution happens on the Cardano node validating your transaction.
+Validator scripts are executed automatically when a UTXO residing at the address of the script is attempted to be moved by a transaction. These scripts take a transaction as its input and then outputs either true or false depending on whether the transaction is valid or not according to your rules/logic as defined in the script - thus blocking or allowing a transaction to succeed. If you are moving multiple UTXOs residing on the same script address, the validator-script will run once for each UTXO. This script execution happens on the Cardano node validating your transaction.
 
 This means that in order for the validator-script to execute, a transaction must first move a utxo to the address of the contract; the address is derived from the contract mathematically. You do not need to upload your contract to the chain, although that is also possible using reference scripts.