fix: add helm repo instructions to vector aggregator tutorial

Author: dervoeti

modules/tutorials/examples/logging-aggregator/main.sh

@@ -5,6 +5,11 @@ echo "Installing ZooKeeper Operator"
 stackablectl release install -i secret -i commons -i listener -i zookeeper 23.11
 # end::zk-op[]
 
+# tag::vector-helm-repo[]
+helm repo add vector https://helm.vector.dev
+helm repo update
+# end::vector-helm-repo[]
+
 # tag::vector-agg[]
 helm install \
   --wait \

modules/tutorials/pages/logging-vector-aggregator.adoc

@@ -31,6 +31,11 @@ include::example$logging-aggregator/vector-aggregator-values.yaml[]
 <1> define a source of `type` `vector` which listens to incoming log messages at port 6000.
 <2> define a `console` sink, logging all received logs to `stderr`.
 
+Add the Vector Helm repository if you haven't done so already:
+
+[source,bash]
+include::example$logging-aggregator/main.sh[tag=vector-helm-repo]
+
 Deploy Vector with these values using Helm:
 
 [source,bash]