Fix yaml syntax in CircleCI config

.circleci/config.yml

@@ -33,7 +33,7 @@ jobs:
           command: cargo clippy --all-targets --all-features
       - run:
           name: Package Audit
-          command: >
+          command: |
             mkdir -p ~/.cargo
             cp .cargo/audit.toml ~/.cargo/audit.toml
             cargo audit