Corrected rendering of exports (#3035)

Signed-off-by: Joao C Costa <joaocc@users.noreply.github.com>

Signed-off-by: Joao C Costa <joaocc@users.noreply.github.com>
Co-authored-by: greenie-msft <56556602+greenie-msft@users.noreply.github.com>

daprdocs/content/en/operations/hosting/kubernetes/kubernetes-deploy.md

@@ -64,9 +64,11 @@ There are some scenarios where it's necessary to install Dapr from a private Hel
 - having a custom Dapr deployment
 - pulling Helm charts from trusted registries that are managed and maintained by your organization
 
+```
 export DAPR_HELM_REPO_URL="https://helm.custom-domain.com/dapr/dapr"
 export DAPR_HELM_REPO_USERNAME="username_xxx"
 export DAPR_HELM_REPO_PASSWORD="passwd_xxx"
+```
 
 Setting the above parameters will allow `dapr init -k` to install Dapr images from the configured Helm repository.