style(cargo.toml): fix missing newline at end of file

Author: FrankCasanova

squash-the-creeps/rust/.cargo/cargo.toml

@@ -9,4 +9,4 @@ rustflags = [
     "-C", "target-feature=+atomics,+bulk-memory,+mutable-globals",
     "-Zlink-native-libraries=no",
     "-Cllvm-args=-enable-emscripten-cxx-exceptions=0",
-]
+]