fix: add missing bracket (#8969)

tests/rust_usage_test/tests/integration_test.rs

diff --git a/tests/rust_usage_test/tests/integration_test.rs b/tests/rust_usage_test/tests/integration_test.rs
index c0fdab8..2a3043a 100644
--- a/tests/rust_usage_test/tests/integration_test.rs
+++ b/tests/rust_usage_test/tests/integration_test.rs
@@ -3447,4 +3447,5 @@
     assert_eq!(m.enemy().unwrap().name(), "goblin");
 }
 
+} // mod flatbuffers_tests
 }