Spelling correction in the instrument view pick tab

sometimes it is easier to fix the issue rather than assign it.

re #15902

MantidQt/MantidWidgets/src/InstrumentView/InstrumentWidgetMaskTab.cpp

@@ -550,7 +550,7 @@ void InstrumentWidgetMaskTab::setProperties() {
   m_userEditing = false;
 
   // bounding rect property
-  QtProperty *boundingRectGroup = m_groupManager->addProperty("Bounging Rect");
+  QtProperty *boundingRectGroup = m_groupManager->addProperty("Bounding Rect");
   m_browser->addProperty(boundingRectGroup);
   m_left = addDoubleProperty("left");
   m_top = addDoubleProperty("top");