Better label for stale PRs

Author: aaime

.github/stale.yml

@@ -6,7 +6,7 @@ daysUntilClose: 14
 exemptLabels:
   - pinned
 # Label to use when marking an issue as stale
-staleLabel: wontfix
+staleLabel: stale
 # Comment to post when marking an issue as stale. Set to `false` to disable
 markComment: >
   This issue has been automatically marked as stale because it has not had