Change days until close and close comment.

From the tests done with the example issue, `0` seems to be an invalid value for `daysUntilClose` unfortunately.

.github/stale.yml

@@ -1,7 +1,7 @@
 # Number of days of inactivity before an issue becomes stale
 daysUntilStale: 21
 # Number of days of inactivity before a stale issue is closed
-daysUntilClose: 0
+daysUntilClose: 3
 # Only issues or pull requests with all of these labels are check if stale. Defaults to `[]` (disabled)
 onlyLabels: ["waiting for reply"]
 # Issues with these labels will never be considered stale
@@ -12,5 +12,5 @@ exemptLabels:
 staleLabel: "no response"
 # Comment to post when closing a stale issue. Set to `false` to disable
 closeComment: >
-  This issue has been automatically closed and marked as "no response" because it has not had
-  recent activity. Feel free to reply to get it reopened.
+  This issue has been automatically closed because it has not had any
+  recent activity and was marked with "no response". Feel free to reply to get it reopened.