Change `slot` to `probe` in .qml file

ui/emulator/items/TopLeftTop.qml

@@ -17,19 +17,19 @@ GridLayout {
     columns: 4
 
     ProbeButton {
-        name: "probe1"
+        name: "slot1"
         image: "qrc:/icons/topLeft/probe.png"
     }
     ProbeButton {
-        name: "probe2"
+        name: "slot2"
         image: "qrc:/icons/topLeft/probe.png"
     }
     ProbeButton {
-        name: "probe3"
+        name: "slot3"
         image: "qrc:/icons/topLeft/probe.png"
     }
     ProbeButton {
-        name: "probe4"
+        name: "slot4"
         image: "qrc:/icons/topLeft/probe.png"
     }
     property var widthOfBtns: 130