Fix docs build

Author: davidcole1340

.github/workflows/docs.yml

@@ -42,7 +42,7 @@ jobs:
         env:
           LIBCLANG_PATH: ${{ runner.temp }}/llvm-${{ matrix.llvm }}/lib
           RUSTDOCFLAGS: --cfg docs
-        run: cargo --release
+        run: cargo doc --release
       - name: Build guide
         run: |
           mdbook build guide