This was done by taking the gitlab redirections and turning it into a
sed script, mostly by hand.

service/prometheus.md

@@ -738,7 +738,7 @@ file][]:
     annotations:
       summary: 'Exporter job {{ $labels.job }} on {{ $labels.instance }} is down'
       description: 'Exporter job {{ $labels.job }} on {{ $labels.instance }} has been unreachable for more than 15 minutes.'
-      playbook: "https://gitlab.torproject.org/tpo/tpa/team/-/wikis/howto/prometheus/#exporter-job-down-warnings"
+      playbook: "https://gitlab.torproject.org/tpo/tpa/team/-/wikis/service/prometheus/#exporter-job-down-warnings"
 ```
 
 In the above, Prometheus will generate an alert if the metric `up` is