Fix syntax error

Author: mrnugget

cmd/src/format.go

@@ -95,7 +95,7 @@ func parseTemplate(text string) (*template.Template, error) {
 		"renderResult":                      searchTemplateFuncs["renderResult"],
 
 		// `src campaign plans create-from-patches`
-		"friendlyCampaignPlanCreatedMessage": func(campaignPlan CampaignPlan, supportsUpdate bool) string {
+		"friendlyCampaignPlanCreatedMessage": func(campaignPlan CampaignPlan) string {
 			var buf bytes.Buffer
 			fmt.Fprintln(&buf)
 			fmt.Fprintln(&buf, color.HiGreenString("✔  Campaign plan saved."), "\n\nTo preview and run the campaign (and create branches and changesets):")