Documentation: Fix chapter level

diff --git a/doc/4-monitoring-basics.md b/doc/4-monitoring-basics.md
index c01b069e80e6a7cd158c0f0ad176fc2d5625ab88..bcadda54de107b0c2177cfa838849a20b5792f10 100644 (file)
--- a/doc/4-monitoring-basics.md
+++ b/doc/4-monitoring-basics.md
@@ -337,7 +337,7 @@ and all members of the user group `noc` will get notified.
 
 Detailed examples can be found in the [dependencies](#dependencies) chapter.
 
-### <a id="using-apply-scheduledowntimes"></a> Apply Recurring Downtimes to Hosts and Services
+#### <a id="using-apply-scheduledowntimes"></a> Apply Recurring Downtimes to Hosts and Services
 
 The sample confituration ships an example in [downtimes.conf](#downtimes-conf).