Updating retry partition test to have correct expected permits

Author: annahay4

aws/codegen-aws-sdk/src/test/kotlin/software/amazon/smithy/rustsdk/RetryPartitionTest.kt

@@ -139,7 +139,7 @@ class RetryPartitionTest {
                             ) -> Result<(), #{BoxError}> {
                                 self.called.fetch_add(1, Ordering::Relaxed);
                                 let token_bucket = cfg.load::<#{TokenBucket}>().unwrap();
-                                let expected = format!("permits: 5000000000");
+                                let expected = format!("permits: 500000000");
                                 assert!(
                                     format!("{token_bucket:?}").contains(&expected),
                                     "Expected debug output to contain `{expected}`, but got: {token_bucket:?}"