fix title underline length

diff --git a/pdns/recursordist/docs/metrics.rst b/pdns/recursordist/docs/metrics.rst
index 3dd833da8080cfbe790c68a1b2796e177d3ae624..ba40f59a9a0899353cefeb480e08f77bc424c576 100644 (file)
--- a/pdns/recursordist/docs/metrics.rst
+++ b/pdns/recursordist/docs/metrics.rst
@@ -293,7 +293,7 @@ Cumulative counts of answer times of authoritative servers in buckets less than
 These metrics are useful for Prometheus and not listed in other outputs by default.
 
 cumul-clientanswers-x
-^^^^^^^^^^^^^^^^^^
+^^^^^^^^^^^^^^^^^^^^^
 .. versionadded:: 4.6
 
 Cumulative counts of our answer times to clients in buckets less or equal than x microseconds.