Specify each excluded crate separately

Author: timsaucer

.github/workflows/rust.yml

@@ -185,7 +185,7 @@ jobs:
         with:
           rust-version: stable
       - name: Run tests (excluding doctests)
-        run: cargo test --profile ci --exclude datafusion-examples,ffi_example_table_provider --exclude datafusion-benchmarks --workspace --lib --tests --bins --features avro,json,backtrace,integration-tests
+        run: cargo test --profile ci --exclude datafusion-examples --exclude ffi_example_table_provider --exclude datafusion-benchmarks --workspace --lib --tests --bins --features avro,json,backtrace,integration-tests
       - name: Verify Working Directory Clean
         run: git diff --exit-code