Merge pull request #87 from pinakispecial/patch-1

Update README.md

Author: debianmaster

promethus/README.md

@@ -10,7 +10,7 @@ oc volume dc/grafana --remove --name=grafana-volume-1  #Some strange fix to make
 oc volume dc/grafana --remove --name=grafana-volume-2  #Some strange fix to make grafana work
 oc new-app prom/prometheus     #deploy latest prometheus
 oc create -f https://raw.githubusercontent.com/debianmaster/openshift-examples/master/promethus/prom-configmap.yml     #mount this configmap at at /etc/prometheus/prometheus.yml  #Scrape rules for prometheus 
-oc volume dc/prometheus --add --name=prom-k8s -m /etc/prometheus -t configmap --configmap-name=prom-k8s  #set rules inside prom 
+oc set volume dc/prometheus --add --name=prom-k8s -m /etc/prometheus -t configmap --configmap-name=prom-k8s  #set rules inside prom 
 ```
 
 ### Add prometheus as Datasource & Dashboard in grafna