update sample links

xml/System/DateTime.xml

@@ -116,7 +116,7 @@ Time values are measured in 100-nanosecond units called ticks. A particular date
 > [!NOTE]
 >  If you are working with a ticks value that you want to convert to some other time interval, such as minutes or seconds, you should use the <xref:System.TimeSpan.TicksPerDay?displayProperty=nameWithType>, <xref:System.TimeSpan.TicksPerHour?displayProperty=nameWithType>, <xref:System.TimeSpan.TicksPerMinute?displayProperty=nameWithType>, <xref:System.TimeSpan.TicksPerSecond?displayProperty=nameWithType>, or <xref:System.TimeSpan.TicksPerMillisecond?displayProperty=nameWithType> constant to perform the conversion. For example, to add the number of seconds represented by a specified number of ticks to the <xref:System.DateTime.Second%2A> component of a <xref:System.DateTime> value, you can use the expression `dateValue.Second + nTicks/Timespan.TicksPerSecond`.  
 
-You can view the source for the entire set of examples from this article in either [Visual Basic](https://github.com/dotnet/docs/tree/master/samples/snippets/visualbasic/System.DateTime/) or [C#](https://github.com/dotnet/docs/tree/master/samples/snippets/csharp/System.DateTime/) from the docs repository on GitHub.
+You can view the source for the entire set of examples from this article in either [Visual Basic](https://github.com/dotnet/samples/tree/master/snippets/visualbasic/System.DateTime/) or [C#](https://github.com/dotnet/samples/tree/master/snippets/csharp/System.DateTime/) from the docs repository on GitHub.
 
 > [!NOTE]
 >  An alternative to the <xref:System.DateTime> structure for working with date and time values in particular time zones is the <xref:System.DateTimeOffset> structure. The <xref:System.DateTimeOffset> structure stores date and time information in a private <xref:System.DateTime> field and the number of minutes by which that date and time differs from UTC in a private <xref:System.Int16> field. This makes it possible for a <xref:System.DateTimeOffset> value to reflect the time in a particular time zone, whereas a <xref:System.DateTime> value can unambiguously reflect only UTC and the local time zone's time. For a discussion about when to use the <xref:System.DateTime> structure or the <xref:System.DateTimeOffset> structure when working with date and time values, see [Choosing Between DateTime, DateTimeOffset, TimeSpan, and TimeZoneInfo](~/docs/standard/datetime/choosing-between-datetime.md).  
@@ -416,7 +416,7 @@ The previous examples all assumed that <xref:System.DateTime> values are express
 [!code-vb[System.DateTime.Persistence#6](~/samples/snippets/visualbasic/System.DateTime/DateWithTimeZone.vb#6)]  
 
 > [!IMPORTANT]
->  The `DateWithTimeZone` structure is used in the next two examples, which serialize and deserialize an array of `DateWithTimeZone` objects. You can view the source for the entire set of examples from this article in either [Visual Basic](https://github.com/dotnet/docs/tree/master/samples/snippets/visualbasic/System.DateTime/) or [C#](https://github.com/dotnet/docs/tree/master/samples/snippets/csharp/System.DateTime/) from the docs repository on GitHub.
+>  The `DateWithTimeZone` structure is used in the next two examples, which serialize and deserialize an array of `DateWithTimeZone` objects. You can view the source for the entire set of examples from this article in either [Visual Basic](https://github.com/dotnet/samples/tree/master/snippets/visualbasic/System.DateTime/) or [C#](https://github.com/dotnet/samples/tree/master/snippets/csharp/System.DateTime/) from the docs repository on GitHub.
 
 By using the `DateWithTimeZone` structure, you can then persist date and time along with time zone information. The following example uses the <xref:System.Runtime.Serialization.Formatters.Binary.BinaryFormatter> class to serialize an array of `DateWithTimeZone` objects.