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

@@ -150,6 +150,7 @@ jobs:
           path: "${{needs.build.outputs.PREVIEW_PATH}}"
       - name: "Commit changes"
         run: |
+          cd ovirt-site
           commit=$(git log --format="%H" -n 1)
           description=$(git describe --always)
           if git status --porcelain 2>/dev/null| grep -E "^??|^M"