[docs] Reformat -help output for help2man

This commit slightly changes the format of the "Usage" strings in CLI
`-help` messages to meet the expection of the help2man tool, which we
use to generate man pages. On the way, we remove a few calls to
`strprintf()`, which became superficial after commit 32fbfda.

1 files changed, 2 insertions, 3 deletions

diff --git a/src/qt/utilitydialog.cpp b/src/qt/utilitydialog.cpp
index 1da25b0761..c9469593a5 100644
--- a/src/qt/utilitydialog.cpp
+++ b/src/qt/utilitydialog.cpp
@@ -70,8 +70,7 @@ HelpMessageDialog::HelpMessageDialog(interfaces::Node& node, QWidget *parent, bo
         ui->helpMessage->setVisible(false);
     } else {
         setWindowTitle(tr("Command-line options"));
-        QString header = "Usage:\n"
-            "  bitcoin-qt [command-line options]                     \n";
+        QString header = "Usage:  bitcoin-qt [command-line options]                     \n";
         QTextCursor cursor(ui->helpMessage->document());
         cursor.insertText(version);
         cursor.insertBlock();
@@ -80,7 +79,7 @@ HelpMessageDialog::HelpMessageDialog(interfaces::Node& node, QWidget *parent, bo
 
         std::string strUsage = gArgs.GetHelpMessage();
         QString coreOptions = QString::fromStdString(strUsage);
-        text = version + "\n" + header + "\n" + coreOptions;
+        text = version + "\n\n" + header + "\n" + coreOptions;
 
         QTextTableFormat tf;
         tf.setBorderStyle(QTextFrameFormat::BorderStyle_None);