Fix ServiceMonitor selector labels (#125)

Reviewed-on: https://gitea.com/gitea/helm-chart/pulls/125
Reviewed-by: Andrew Thornton <art27@cantab.net>
Reviewed-by: lafriks <lafriks@noreply.gitea.io>
Co-authored-by: luhahn <luhahn@noreply.gitea.io>
Co-committed-by: luhahn <luhahn@noreply.gitea.io>

templates/gitea/servicemonitor.yaml

@@ -5,8 +5,8 @@ metadata:
   name: {{ include "gitea.fullname" . }}
   labels:
     {{- include "gitea.labels" . | nindent 4 }}
-    {{- if .Values.metrics.serviceMonitor.prometheusSelector }}
-    prometheus: {{ .Values.metrics.serviceMonitor.prometheusSelector }}
+    {{- if .Values.gitea.metrics.serviceMonitor.prometheusSelector }}
+    prometheus: {{ .Values.gitea.metrics.serviceMonitor.prometheusSelector }}
     {{- end }}
 spec:
   selector: