Merge pull request #5933 from hongshaoyang/revert-5551-docs-chart-best-practices-fixes

Revert "Fixed default value for `helm.sh/chart` label"

docs/chart_best_practices/labels.md

@@ -26,7 +26,7 @@ are recommended, and _should_ be placed onto a chart for global consistency. Tho
 Name|Status|Description
 -----|------|----------
 `app.kubernetes.io/name` | REC | This should be the app name, reflecting the entire app. Usually `{{ template "name" . }}` is used for this. This is used by many Kubernetes manifests, and is not Helm-specific.
-`helm.sh/chart` | REC | This should be the chart name and version: `{{ .Chart.Name }}-{{ .Chart.Version | replace "+" "_" }}`.
+`helm.sh/chart` | REC | This should be the chart name and version: `{{ .Chart.Name }}-{{ .Chart.Version \| replace "+" "_" }}`.
 `app.kubernetes.io/managed-by` | REC | This should always be set to `{{ .Release.Service }}`. It is for finding all things managed by Tiller.
 `app.kubernetes.io/instance` | REC | This should be the `{{ .Release.Name }}`. It aids in differentiating between different instances of the same application.
 `app.kubernetes.io/version` | OPT | The version of the app and can be set to `{{ .Chart.AppVersion }}`.