Fix quoting around reconciliation error message

While fixing an unrelated issue, I noticed:
    ✗ GitRepository reconciliation failed: ''PGP public keys secret error: expected pointer, but got nil

the single quote should surround the readyCond.Message

Signed-off-by: Kingdon Barrett <yebyen@gmail.com>

cmd/flux/reconcile.go

@@ -122,7 +122,7 @@ func (reconcile reconcileCommand) run(cmd *cobra.Command, args []string) error {
 	}
 
 	if readyCond.Status != metav1.ConditionTrue {
-		return fmt.Errorf("%s reconciliation failed: ''%s", reconcile.kind, readyCond.Message)
+		return fmt.Errorf("%s reconciliation failed: '%s'", reconcile.kind, readyCond.Message)
 	}
 	logger.Successf(reconcile.object.successMessage())
 	return nil