chore(docs): Update stackablectl commands in getting started guide (#573)

Author: Techassi

docs/modules/nifi/examples/getting_started/getting_started.sh

@@ -212,7 +212,7 @@ echo "NiFi web interface: $nifi_url"
 
 echo "Getting NiFi endpoint with stackablectl ..."
 # tag::stackablectl-nifi-url[]
-nifi_url=$(stackablectl svc list -o json | jq --raw-output '.nifi[0].endpoints.https')
+nifi_url=$(stackablectl stacklet ls -o json | jq --raw-output '.[] | select(.name == "simple-nifi") | .endpoints.https')
 # end::stackablectl-nifi-url[]
 echo "Endpoint: $nifi_url"
 

docs/modules/nifi/examples/getting_started/getting_started.sh.j2

@@ -212,7 +212,7 @@ echo "NiFi web interface: $nifi_url"
 
 echo "Getting NiFi endpoint with stackablectl ..."
 # tag::stackablectl-nifi-url[]
-nifi_url=$(stackablectl svc list -o json | jq --raw-output '.nifi[0].endpoints.https')
+nifi_url=$(stackablectl stacklet ls -o json | jq --raw-output '.[] | select(.name == "simple-nifi") | .endpoints.https')
 # end::stackablectl-nifi-url[]
 echo "Endpoint: $nifi_url"
 

docs/modules/nifi/pages/getting_started/first_steps.adoc

@@ -82,7 +82,7 @@ Use the service command of `stackablectl` to get a list of all available endpoin
 
 [source,bash]
 ----
-stackablectl svc list
+stackablectl stacklet list
 ----
 
 which should return something like this: