Fix formatting issue when generated (#5185)

## Description
- Bump harness template to v0.48.0 for [intro-to-sway
guide](FuelLabs/docs-hub#55)
- Formatting properly with cargo fmt
- Previous that had formatting issue
[PR](#5181)

## Checklist

- [x] I have linked to any relevant issues.
- [x] I have commented my code, particularly in hard-to-understand
areas.
- [x] I have updated the documentation where relevant (API docs, the
reference, and the Sway book).
- [x] I have added tests that prove my fix is effective or that my
feature works.
- [x] I have added (or requested a maintainer to add) the necessary
`Breaking*` or `New Feature` labels where relevant.
- [x] I have done my best to ensure that my PR adheres to [the Fuel Labs
Code Review
Standards](https://github.com/FuelLabs/rfcs/blob/master/text/code-standards/external-contributors.md).
- [x] I have requested a review from the relevant team or maintainers.

---------

Co-authored-by: Sandusky <[email protected]>

templates/sway-test-rs/template/tests/harness.rs

@@ -20,7 +20,10 @@ async fn get_contract_instance() -> (MyContract<WalletUnlocked>, ContractId) {
     .await;
     let wallet = wallets.pop().unwrap();
 
-    let id = Contract::load_from("./out/debug/{{project-name}}.bin", LoadConfiguration::default())
+    let id = Contract::load_from(
+        "./out/debug/{{project-name}}.bin",
+        LoadConfiguration::default(),
+    )
     .unwrap()
     .deploy(&wallet, TxParameters::default())
     .await