Temporarily add a comment to test a GHA scenario

This change will be rewound.

Author: EliahKagan

.github/workflows/ci.yml

@@ -290,7 +290,7 @@ jobs:
         if: matrix.os == 'windows-11-arm'
         run: git version --build-options
       - uses: actions/checkout@v4
-      - name: Install rustup
+      - name: Install rustup  # FIXME: Remove this comment, it is just for testing a non-ff merge.
         if: matrix.os == 'windows-11-arm'
         uses: ./.github/actions/setup-windows-arm-rustup
       - uses: dtolnay/rust-toolchain@stable