RHIDP-7038: Apply Tech Review comments

Author: linfraze

modules/installation/proc-install-rhdh-airgapped-full-k8s-helm.adoc

@@ -26,7 +26,7 @@ helm pull _<helm_chart_repo_name>_/redhat-developer-hub --version _<rhdh_version
 where
 
 _<helm_chart_repo_name>_ :: Specifies the name of the Helm chart repository, for example, `openshift-helm-charts`.
-_<rhdh_version>_ :: Specifies the {product} version that you want to use, for example, `1.4.0`.
+_<rhdh_version>_ :: Specifies the {product} version that you want to use, for example, `{product-chart-version}`.
 +
 [NOTE]
 ====
@@ -55,9 +55,9 @@ skopeo copy --all docker://${PG_IMAGE}:${PG_DIGEST} dir:./postgresql
 +
 * rhdh-hub
 * postgresql
-* Helm chart archive file, for example, `redhat-developer-hub-1.4.0.tgz`
+* Helm chart archive file, for example, `redhat-developer-hub-{product-chart-version}.tgz`
 +
-. Load the images onto the air-gapped host by running the following command:
+. Load the images onto the air-gapped host by running the following commands:
 +
 [source,terminal,subs="+quotes"]
 ----