Add package specifier

Author: jbangelo

.github/workflows/ci.yaml

@@ -48,7 +48,7 @@ jobs:
       - uses: actions/checkout@v5
       - uses: dtolnay/rust-toolchain@nightly
       - uses: dtolnay/install@cargo-docs-rs
-      - run: cargo docs-rs
+      - run: cargo docs-rs -p swiftnav
 
   build:
     name: Build and test