correcting capitalization: helm > Helm (#1018)

versioned_docs/version-2.6/getting-started/installation-and-upgrade/install-upgrade-on-a-kubernetes-cluster/upgrades.md

@@ -55,7 +55,7 @@ You'll use the backup as a restore point if something goes wrong during upgrade.
 
 ### 2. Update the Helm chart repository
 
-1. Update your local helm repo cache.
+1. Update your local Helm repo cache:
 
     ```
     helm repo update

versioned_docs/version-2.6/getting-started/installation-and-upgrade/other-installation-methods/rancher-behind-an-http-proxy/install-rancher.md

@@ -16,7 +16,7 @@ These installation instructions assume you are using Helm 3.
 
 ### Install cert-manager
 
-Add the cert-manager helm repository:
+Add the cert-manager Helm repository:
 
 ```
 helm repo add jetstack https://charts.jetstack.io
@@ -65,7 +65,7 @@ kubectl rollout status deployment -n cert-manager cert-manager-webhook
 
 ### Install Rancher
 
-Next you can install Rancher itself. First add the helm repository:
+Next you can install Rancher itself. First, add the Helm repository:
 
 ```
 helm repo add rancher-latest https://releases.rancher.com/server-charts/latest