Update docs/modules/nifi/pages/usage_guide/monitoring.adoc

Co-authored-by: Malte Sander <malte.sander.it@gmail.com>

Author: xeniape

docs/modules/nifi/pages/usage_guide/monitoring.adoc

@@ -130,7 +130,7 @@ spec:
   jobLabel: app.kubernetes.io/instance
 ----
 <1> In the TLS configuration of the ServiceMonitor, specify the location of the cert and key files mounted into the Prometheus Pod
-<2> Relabel \\__address__ to be a FQDN rather then the IP-Address of the target Pod. This is currently necessary for scraping NiFi since it requires a DNS name to address the NiFi REST API
+<2> Relabel `__address__` to be a FQDN rather then the IP-Address of the target Pod. This is currently necessary to scrape NiFi, since it requires a DNS name to address the NiFi REST API
 <3> Currently, the NiFi StatefulSet only offers using FQDNs for NiFi Pods through the `headless` Service, which is why we use the `headless` Service instead of the `metrics` Service to scrape NiFi metrics
 
 NOTE: As of xref:listener-operator:listener.adoc[Listener] integration, SDP exposes a Service with `-metrics` thus we need to regex this suffix.