Updated the xaml codes

Author: NitheeshKumarThangaraj

ColumnCustomCorners/MainPage.xaml

@@ -8,16 +8,16 @@
     <local:ViewModel x:Name="viewModel"/>
 </ContentPage.BindingContext>
 
-<chart:SfCartesianChart Title="Customize different border radius for each segment" Margin="30">
+<chart:SfCartesianChart Margin="30">
     <chart:SfCartesianChart.XAxes>
-            <chart:CategoryAxis>
+            <chart:CategoryAxis ShowMajorGridLines="False">
                 <chart:CategoryAxis.Title>
                     <chart:ChartAxisTitle Text="Month"/>
                 </chart:CategoryAxis.Title>
             </chart:CategoryAxis>
         </chart:SfCartesianChart.XAxes>
         <chart:SfCartesianChart.YAxes>
-            <chart:NumericalAxis RangePadding="Additional">
+            <chart:NumericalAxis RangePadding="Additional" Minimum="-10000">
                 <chart:NumericalAxis.Title>
                     <chart:ChartAxisTitle Text="Sales"/>
                 </chart:NumericalAxis.Title>

ColumnCustomCorners/MainPage.xaml.cs

@@ -1,5 +1,4 @@
-using Syncfusion.Maui.Toolkit.Carousel;
-using Syncfusion.Maui.Toolkit.Charts;
+using Syncfusion.Maui.Toolkit.Charts;
 
 namespace ColumnCustomCorners;