chore: comment

crates/yttrium/src/transaction/send/safe_test.rs

@@ -457,6 +457,9 @@ mod tests {
         to: Address,
     ) -> eyre::Result<()> {
         if amount > U256::from(20) {
+            // Basic check (which we can tune) to make sure we don't use
+            // excessive amounts (e.g. 0.1) of test ETH. It is not infinite, so
+            // we should use the minimum amount necessary.
             panic!("You probably don't need that much");
         }
         println!("address: {}", faucet.address());