ci: fix preview pipeline

fix publish preview to get github pages functional again

Signed-off-by: Jasper Berton <jasper.berton@team.blue>

Author: JasperB-TeamBlue

.github/workflows/preview.yml

@@ -137,6 +137,7 @@ jobs:
       - name: "Checkout repo"
         uses: actions/checkout@v4
         with:
+          path: ovirt-site
           ref: gh-pages
           token: "${{ secrets.GITHUB_TOKEN }}"
       - name: "Remove preview build directory"