Fix syntax error in manager from a previous, simple looking PR merge. Huh :O

internal/manager/manager.go

@@ -124,7 +124,7 @@ type Config struct {
 	MessageURL            string
 	ViewTrackURL          string
 	ArchiveURL            string
-	RootURL	              string
+	RootURL               string
 	UnsubHeader           bool
 
 	// Interval to scan the DB for active campaign checkpoints.
@@ -356,7 +356,7 @@ func (m *Manager) TemplateFuncs(c *models.Campaign) template.FuncMap {
 		},
 		"RootURL": func() string {
 			return m.cfg.RootURL
-		}
+		},
 	}
 
 	for k, v := range m.tplFuncs {