Fix upgarde typo

Author: jmlrt

cmd/upgrade.go

@@ -99,13 +99,13 @@ func newChartCommand() *cobra.Command {
 			"  # Set HELM_DIFF_USE_UPGRADE_DRY_RUN=true to",
 			"  # use `helm upgrade --dry-run` instead of `helm template` to render manifests from the chart.",
 			"  # See https://github.com/databus23/helm-diff/issues/253 for more information.",
-			"  HELM_DIFF_USE_UPGRADE_DRY_RUN=true helm diff upgarde my-release datadog/datadog",
+			"  HELM_DIFF_USE_UPGRADE_DRY_RUN=true helm diff upgrade my-release datadog/datadog",
 			"",
 			"  # Set HELM_DIFF_THREE_WAY_MERGE=true to",
 			"  # enable the three-way-merge on diff.",
 			"  # This is equivalent to specifying the --three-way-merge flag.",
 			"  # Read the flag usage below for more information on --three-way-merge.",
-			"  HELM_DIFF_THREE_WAY_MERGE=true helm diff upgarde my-release datadog/datadog",
+			"  HELM_DIFF_THREE_WAY_MERGE=true helm diff upgeade my-release datadog/datadog",
 			"",
 			"  # Set HELM_DIFF_NORMALIZE_MANIFESTS=true to",
 			"  # normalize the yaml file content when using helm diff.",