WalletCacheDebug: use monospace font

src/dialog/WalletCacheDebugDialog.cpp

@@ -3,6 +3,7 @@
 
 #include "WalletCacheDebugDialog.h"
 #include "ui_WalletCacheDebugDialog.h"
+#include "model/ModelUtils.h"
 
 #include <QRadioButton>
 
@@ -13,6 +14,8 @@ WalletCacheDebugDialog::WalletCacheDebugDialog(AppContext *ctx, QWidget *parent)
 {
     ui->setupUi(this);
 
+    ui->output->setFont(ModelUtils::getMonospaceFont());
+
     connect(ui->m_blockchain, &QRadioButton::pressed, [this]{
         this->setOutput(m_ctx->currentWallet->printBlockchain());
     });