Reword warning

src/AutoPilotPlugins/APM/APMSensorsComponent.qml

@@ -155,7 +155,7 @@ SetupPage {
             Component.onCompleted: {
                 var usingUDP = controller.usingUDPLink()
                 if (usingUDP) {
-                    showMessage("Sensor Calibration", "Performing sensor calibration over a WiFi connection is known to be unreliable. You should disconnect and perform calibration using a direct USB connection instead.", StandardButton.Ok)
+                    showMessage("Sensor Calibration", "Performing sensor calibration over a WiFi connection can be unreliable. If you run into problems try using a direct USB connection instead.", StandardButton.Ok)
                 }
             }