Fix typo in filename: grpc-bindings.rs am: 3b321bdd51

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/grpcio-sys/+/3076048

Change-Id: I6c2d4811039e6bf098d45b5f070bbd7b4a00d17a
Signed-off-by: Automerger Merge Worker <[email protected]>