change admin menu url to smtp-server

internal/webui/mfa_enforcement_test.go

@@ -56,7 +56,7 @@ func TestAdminMFAEnforcementForcesIsolatedSetupThenReleases(t *testing.T) {
 	if !strings.Contains(body, "Two-factor authentication required") {
 		t.Error("expected the MFA-required heading on /mfa-setup")
 	}
-	if strings.Contains(body, "sidebar") || strings.Contains(body, `href="/pymta-manager/domains"`) {
+	if strings.Contains(body, "sidebar") || strings.Contains(body, `href="/smtp-server/domains"`) {
 		t.Error("expected no sidebar/navigation on the isolated setup page")
 	}