Update DateTime.xml (dotnet#5344)

Author: NetMage

xml/System/DateTime.xml

@@ -504,7 +504,7 @@ The behavior of the .NET Framework and COM means that if your application round-
     <altmember cref="T:System.DateTimeOffset" />
     <altmember cref="T:System.TimeSpan" />
     <altmember cref="T:System.Globalization.Calendar" />
-    <altmember cref="M:System.TimeZone.GetUtcOffset(System.DateTime)" />
+    <altmember cref="M:System.TimeZoneInfo.GetUtcOffset(System.DateTime)" />
     <altmember cref="T:System.TimeZoneInfo" />
     <related type="Article" href="/dotnet/standard/datetime/choosing-between-datetime">Choosing Between DateTime, DateTimeOffset, TimeSpan, and TimeZoneInfo</related>
     <related type="Article" href="/dotnet/standard/datetime/working-with-calendars">Working with Calendars</related>
@@ -3027,7 +3027,7 @@ The behavior of the .NET Framework and COM means that if your application round-
      [!code-vb[System.DateTime.FromFileTime#1](~/samples/snippets/visualbasic/VS_Snippets_CLR_System/system.datetime.fromfiletime/vb/fromfiletime1.vb#1)]</para>
         </block>
         <altmember cref="M:System.DateTime.ToUniversalTime" />
-        <altmember cref="M:System.TimeZone.GetUtcOffset(System.DateTime)" />
+        <altmember cref="M:System.TimeZoneInfo.GetUtcOffset(System.DateTime)" />
       </Docs>
     </Member>
     <Member MemberName="FromFileTimeUtc">
@@ -3086,7 +3086,7 @@ The behavior of the .NET Framework and COM means that if your application round-
         <exception cref="T:System.ArgumentOutOfRangeException">
           <paramref name="fileTime" /> is less than 0 or represents a time greater than <see cref="F:System.DateTime.MaxValue" />.</exception>
         <altmember cref="M:System.DateTime.ToUniversalTime" />
-        <altmember cref="M:System.TimeZone.GetUtcOffset(System.DateTime)" />
+        <altmember cref="M:System.TimeZoneInfo.GetUtcOffset(System.DateTime)" />
         <altmember cref="M:System.DateTime.FromFileTime(System.Int64)" />
       </Docs>
     </Member>
@@ -7414,7 +7414,7 @@ In general, the ticks represent the time according to the time zone specified by
         <altmember cref="M:System.DateTime.ToFileTimeUtc" />
         <altmember cref="T:System.Int64" />
         <altmember cref="M:System.DateTime.ToUniversalTime" />
-        <altmember cref="M:System.TimeZone.GetUtcOffset(System.DateTime)" />
+        <altmember cref="M:System.TimeZoneInfo.GetUtcOffset(System.DateTime)" />
       </Docs>
     </Member>
     <Member MemberName="ToFileTimeUtc">
@@ -7472,7 +7472,7 @@ In general, the ticks represent the time according to the time zone specified by
         <altmember cref="M:System.DateTime.ToFileTime" />
         <altmember cref="T:System.Int64" />
         <altmember cref="M:System.DateTime.ToUniversalTime" />
-        <altmember cref="M:System.TimeZone.GetUtcOffset(System.DateTime)" />
+        <altmember cref="M:System.TimeZoneInfo.GetUtcOffset(System.DateTime)" />
       </Docs>
     </Member>
     <Member MemberName="ToLocalTime">
@@ -7517,7 +7517,7 @@ In general, the ticks represent the time according to the time zone specified by
           <format type="text/markdown"><![CDATA[  
 
 ## Remarks  
- The local time is equal to the Coordinated Universal Time (UTC) time plus the UTC offset. For more information about the UTC offset, see <xref:System.TimeZone.GetUtcOffset%2A?displayProperty=nameWithType>. The conversion also takes into account the daylight saving time rule that applies to the time represented by the current <xref:System.DateTime> object.  
+ The local time is equal to the Coordinated Universal Time (UTC) time plus the UTC offset. For more information about the UTC offset, see <xref:System.TimeZoneInfo.GetUtcOffset%2A?displayProperty=nameWithType>. The conversion also takes into account the daylight saving time rule that applies to the time represented by the current <xref:System.DateTime> object.  
 
 > [!IMPORTANT]
 >  On Windows XP systems, the <xref:System.DateTime.ToLocalTime%2A> method recognizes only the current adjustment rule when converting from UTC to local time. As a result, conversions for periods before the current adjustment rule came into effect may not accurately reflect the difference between UTC and local time.  
@@ -7559,9 +7559,9 @@ In general, the ticks represent the time according to the time zone specified by
  [!code-csharp[System.DateTime.ToLocalTime#1](~/samples/snippets/csharp/VS_Snippets_CLR_System/system.datetime.tolocaltime/cs/tolocaltime1.cs#1)]
  [!code-vb[System.DateTime.ToLocalTime#1](~/samples/snippets/visualbasic/VS_Snippets_CLR_System/system.datetime.tolocaltime/vb/tolocaltime1.vb#1)]</para>
         </block>
-        <altmember cref="T:System.TimeZone" />
-        <altmember cref="M:System.TimeZone.GetUtcOffset(System.DateTime)" />
-        <altmember cref="M:System.TimeZone.GetDaylightChanges(System.Int32)" />
+        <altmember cref="T:System.TimeZoneInfo" />
+        <altmember cref="M:System.TimeZoneInfo.GetUtcOffset(System.DateTime)" />
+        <altmember cref="M:System.TimeZoneInfo.GetAdjustmentRules" />
         <altmember cref="M:System.DateTime.ToUniversalTime" />
       </Docs>
     </Member>
@@ -8323,7 +8323,7 @@ The value of the current <xref:System.DateTime> object is formatted using the pa
           <format type="text/markdown"><![CDATA[  
 
 ## Remarks  
- The Coordinated Universal Time (UTC) is equal to the local time minus the UTC offset. For more information about the UTC offset, see <xref:System.TimeZone.GetUtcOffset%2A?displayProperty=nameWithType>. The conversion also takes into account the daylight saving time rule that applies to the time represented by the current <xref:System.DateTime> object.  
+ The Coordinated Universal Time (UTC) is equal to the local time minus the UTC offset. For more information about the UTC offset, see <xref:System.TimeZoneInfo.GetUtcOffset%2A?displayProperty=nameWithType>. The conversion also takes into account the daylight saving time rule that applies to the time represented by the current <xref:System.DateTime> object.  
 
 > [!IMPORTANT]
 >  On Windows XP systems, the <xref:System.DateTime.ToUniversalTime%2A> method recognizes only the current adjustment rule when converting from local time to UTC. As a result, conversions for periods before the current adjustment rule came into effect may not accurately reflect the difference between local time and UTC.  
@@ -9170,7 +9170,7 @@ The value of the current <xref:System.DateTime> object is formatted using the pa
  ]]></format>
         </remarks>
         <altmember cref="P:System.DateTimeOffset.UtcNow" />
-        <altmember cref="M:System.TimeZone.GetUtcOffset(System.DateTime)" />
+        <altmember cref="M:System.TimeZoneInfo.GetUtcOffset(System.DateTime)" />
       </Docs>
     </Member>
     <Member MemberName="Year">