Fix tab-spacing

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Author: StephenMolloy

src/libraries/System.Runtime.Serialization.Xml/tests/DataContractSerializer.cs

@@ -1427,35 +1427,34 @@ public static void DCS_InternalTypeSerialization()
         Assert.StrictEqual(deserializedValue.GetPrivatePropertyValue(), value.GetPrivatePropertyValue());
     }
 
-        [Fact]
-        public static void DCS_DateTimeOffsetInIXmlSerializableContainer()
-        {
-            // Ensures DateTimeOffset deserialization works correctly when DCS is used
-            // within an IXmlSerializable implementation (regression coverage).
-            var originalDate = new DateTimeOffset(2025, 4, 17, 22, 45, 0, TimeSpan.FromHours(-4));
-            var container = new SerializationTypes.DateTimeOffsetIXmlSerializableContainer { Date = originalDate };
+    [Fact]
+    public static void DCS_DateTimeOffsetInIXmlSerializableContainer()
+    {
+        // Ensures DateTimeOffset deserialization works correctly when DCS is used
+        // within an IXmlSerializable implementation (regression coverage).
+        var originalDate = new DateTimeOffset(2025, 4, 17, 22, 45, 0, TimeSpan.FromHours(-4));
+        var container = new SerializationTypes.DateTimeOffsetIXmlSerializableContainer { Date = originalDate };
 
-            var serializer = new DataContractSerializer(typeof(SerializationTypes.DateTimeOffsetIXmlSerializableContainer));
+        var serializer = new DataContractSerializer(typeof(SerializationTypes.DateTimeOffsetIXmlSerializableContainer));
 
-            string serialized;
-            using (var ms = new MemoryStream())
-            {
-                serializer.WriteObject(ms, container);
-                serialized = Encoding.UTF8.GetString(ms.ToArray());
-            }
-
-            SerializationTypes.DateTimeOffsetIXmlSerializableContainer deserialized;
-            using (var ms = new MemoryStream(Encoding.UTF8.GetBytes(serialized)))
-            {
-                deserialized = (SerializationTypes.DateTimeOffsetIXmlSerializableContainer)serializer.ReadObject(ms);
-            }
+        string serialized;
+        using (var ms = new MemoryStream())
+        {
+            serializer.WriteObject(ms, container);
+            serialized = Encoding.UTF8.GetString(ms.ToArray());
+        }
 
-            Assert.Equal(originalDate, deserialized.Date);
-            Assert.Equal(originalDate.DateTime, deserialized.Date.DateTime);
-            Assert.Equal(originalDate.Offset, deserialized.Date.Offset);
-            Assert.Equal(originalDate.UtcDateTime, deserialized.Date.UtcDateTime);
+        SerializationTypes.DateTimeOffsetIXmlSerializableContainer deserialized;
+        using (var ms = new MemoryStream(Encoding.UTF8.GetBytes(serialized)))
+        {
+            deserialized = (SerializationTypes.DateTimeOffsetIXmlSerializableContainer)serializer.ReadObject(ms);
         }
 
+        Assert.Equal(originalDate, deserialized.Date);
+        Assert.Equal(originalDate.DateTime, deserialized.Date.DateTime);
+        Assert.Equal(originalDate.Offset, deserialized.Date.Offset);
+        Assert.Equal(originalDate.UtcDateTime, deserialized.Date.UtcDateTime);
+    }
     [Fact]
     public static void DCS_PrivateTypeSerialization()
     {