ci: Fix typo in close stale workflow (#2420)

.github/workflows/close-stale.yml

@@ -12,6 +12,6 @@ jobs:
           stale-pr-message: 'This PR is stale because it has been open 14 days with no activity. Remove stale label or comment or this will be closed in 5 days.'
           exempt-pr-labels: exempt-stale
           days-before-issue-stale: 999
-          dats-before-pr-stale: 14
+          days-before-pr-stale: 14
           days-before-close: 5
           repo-token: ${{ secrets.GITHUB_TOKEN }}
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