Website: update Rust reference

Author: dannywillems

website/docs/developers/documentation-guidelines.md

@@ -38,7 +38,7 @@ Here's a real example from the zkApps documentation:
 <!-- CODE_REFERENCE: ledger/src/scan_state/transaction_logic.rs#L3588-L3592 -->
 
 ```rust reference title="ledger/src/scan_state/transaction_logic.rs"
-https://github.com/o1-labs/mina-rust/blob/develop/ledger/src/scan_state/transaction_logic.rs#L3588-L3592
+https://github.com/o1-labs/mina-rust/blob/develop/ledger/src/scan_state/transaction_logic/valid.rs#L80-L83
 ```
 
 ### Components explained