small typo on yAxes display toggle

FreeAPS/Sources/Modules/Home/View/Chart/MainChartView.swift

@@ -1064,7 +1064,7 @@ extension MainChartView {
     private var mainChartYAxis: some AxisContent {
         AxisMarks(position: .trailing) { value in
 
-            if displayXgridLines {
+            if displayYgridLines {
                 AxisGridLine(stroke: .init(lineWidth: 0.5, dash: [2, 3]))
             } else {
                 AxisGridLine(stroke: .init(lineWidth: 0, dash: [2, 3]))
@@ -1082,7 +1082,7 @@ extension MainChartView {
 
     private var cobChartYAxis: some AxisContent {
         AxisMarks(position: .trailing) { _ in
-            if displayXgridLines {
+            if displayYgridLines {
                 AxisGridLine(stroke: .init(lineWidth: 0.5, dash: [2, 3]))
             } else {
                 AxisGridLine(stroke: .init(lineWidth: 0, dash: [2, 3]))