remove extraneous periods

src/MAUI/Maui.Samples/Samples/UtilityNetwork/ValidateUtilityNetworkTopology/ValidateUtilityNetworkTopology.xaml.cs

@@ -227,7 +227,7 @@ private async Task Initialize()
                 // Set the instruction text.
                 Status.Text = "Utility Network Loaded\n" +
                     "Tap on a feature to edit.\n" +
-                    "Click 'Get State' to check if validating is necessary.\n" +
+                    "Click 'Get State' to check if validating is necessary\n" +
                     "or if tracing is available.\n" +
                     "Click 'Trace' to run a trace.";
             }

src/WPF/WPF.Viewer/Samples/UtilityNetwork/ValidateUtilityNetworkTopology/ValidateUtilityNetworkTopology.xaml.cs

@@ -230,7 +230,7 @@ private async Task Initialize()
                 // Set the instruction text.
                 Status.Text = "Utility Network Loaded\n" +
                     "Tap on a feature to edit.\n" +
-                    "Click 'Get State' to check if validating is necessary.\n" +
+                    "Click 'Get State' to check if validating is necessary\n" +
                     "or if tracing is available.\n" +
                     "Click 'Trace' to run a trace.";
             }

src/WinUI/ArcGIS.WinUI.Viewer/Samples/UtilityNetwork/ValidateUtilityNetworkTopology/ValidateUtilityNetworkTopology.xaml.cs

@@ -231,7 +231,7 @@ private async Task Initialize()
                 // Set the instruction text.
                 Status.Text = "Utility Network Loaded\n" +
                     "Tap on a feature to edit.\n" +
-                    "Click 'Get State' to check if validating is necessary.\n" +
+                    "Click 'Get State' to check if validating is necessary\n" +
                     "or if tracing is available.\n" +
                     "Click 'Trace' to run a trace.";
             }