tweeks to installation script and docs

rh-pre-commit.version: 2.3.2
rh-pre-commit.check-secrets: ENABLED

Author: Omar-AlJaljuli

.rhdh/docs/installing-ci-charts.adoc

@@ -14,7 +14,7 @@ cd /tmp
 # Install the chart repo
 # Install the chart, then update the clusterRouterBase
 curl -sSLO https://raw.githubusercontent.com/redhat-developer/rhdh-chart/refs/heads/main/.rhdh/scripts/install.sh && chmod +x install.sh
-./install.sh 1.7-20-CI --namespace rhdh-1-7-20-ci --chartrepo
+./install.sh 1.7-20-CI --namespace rhdh-1-7-20-ci
 ```
 
 That's it! 

.rhdh/scripts/install.sh

@@ -68,6 +68,7 @@ elif [[ -z $CLUSTER_ROUTER_BASE ]]; then
   echo "Rerun command installation script with --router <cluster router base>"
   echo
   usage
+  exit 1
 fi
 
 # 2. install helm with correct values

charts/backstage/Chart.yaml

@@ -32,6 +32,7 @@ icon: data:image/svg+xml;base64,PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0iVVRGLTgi
 keywords:
   - backstage
   - idp
+  - janus-idp
   - developer-hub
   - redhat-developer-hub
   - redhat