Fix some go-lint warnings

Signed-off-by: zouyu <zouy.fnst@cn.fujitsu.com>

pkg/postrender/postrender.go

@@ -14,7 +14,7 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 
-// package postrender contains an interface that can be implemented for custom
+// Package postrender contains an interface that can be implemented for custom
 // post-renderers and an exec implementation that can be used for arbitrary
 // binaries and scripts
 package postrender

pkg/storage/storage.go

@@ -27,7 +27,7 @@ import (
 	"helm.sh/helm/v3/pkg/storage/driver"
 )
 
-// The type field of the Kubernetes storage object which stores the Helm release
+// HelmStorageType is the type field of the Kubernetes storage object which stores the Helm release
 // version. It is modified slightly replacing the '/': sh.helm/release.v1
 // Note: The version 'v1' is incremented if the release object metadata is
 // modified between major releases.