PARTIAL: typofixes (found by misspell_fixer)

Upstream: 9f68ed6b6d1a9c6436ce37913666165f2b180ee3 (PR #6539)

src/qt/paymentserver.cpp

@@ -764,7 +764,7 @@ void PaymentServer::setOptionsModel(OptionsModel *optionsModel)
 
 void PaymentServer::handlePaymentACK(const QString& paymentACKMsg)
 {
-    // currently we don't futher process or store the paymentACK message
+    // currently we don't further process or store the paymentACK message
     Q_EMIT message(tr("Payment acknowledged"), paymentACKMsg, CClientUIInterface::ICON_INFORMATION | CClientUIInterface::MODAL);
 }
 

src/qt/rpcconsole.cpp

@@ -557,7 +557,7 @@ void RPCConsole::peerLayoutChanged()
 
     if (detailNodeRow < 0)
     {
-        // detail node dissapeared from table (node disconnected)
+        // detail node disappeared from table (node disconnected)
         fUnselect = true;
         cachedNodeid = -1;
         ui->detailWidget->hide();

src/qt/splashscreen.cpp

@@ -57,7 +57,7 @@ SplashScreen::SplashScreen(Qt::WindowFlags f, const NetworkStyle *networkStyle)
     QPainter pixPaint(&pixmap);
     pixPaint.setPen(QColor(100,100,100));
 
-    // draw a slighly radial gradient
+    // draw a slightly radial gradient
     QRadialGradient gradient(QPoint(0,0), splashSize.width()/devicePixelRatio);
     gradient.setColorAt(0, Qt::white);
     gradient.setColorAt(1, QColor(247,247,247));