DCOSP-46193 -- fix helm install example commands (#2024)

Author: jvincent-mongodb

source/includes/steps-install-k8s-online-helm.yaml

@@ -42,15 +42,15 @@ content: |
 
   .. code-block:: sh
 
-     helm install  --upgrade enterprise-operator mongodb/enterprise-operator
+     helm upgrade --install enterprise-operator mongodb/enterprise-operator
 
      
   You can pass the ``--namespace`` and ``--create-namespace`` flags to deploy 
   the |k8s-op-short| to a non-default namespace, like so:
 
   .. code-block::
      
-     helm install --upgrade enterprise-operator mongodb/enterprise-operator \
+     helm upgrade --install enterprise-operator mongodb/enterprise-operator \
      --namespace mongodb \
      --create-namespace
 ...