Added links to conceptual docs

Author: ManickaP

xml/System.Net.Quic/QuicConnection.xml

@@ -41,6 +41,7 @@ For QUIC prerequisites and supported operating systems, see [Platform dependenci
       ]]></format>
     </remarks>
     <related type="Article" href="https://www.rfc-editor.org/rfc/rfc9000.html#name-connections">RFC 9000: Connections</related>
+    <related type="ExternalDocumentation" href="/dotnet/fundamentals/networking/quic/quic-overview#quicconnection">Guidelines for using QuicConnection</related>
   </Docs>
   <Members>
     <Member MemberName="AcceptInboundStreamAsync">

xml/System.Net.Quic/QuicListener.xml

@@ -39,6 +39,7 @@ For QUIC prerequisites and supported operating systems, see [Platform dependenci
       ]]></format>
     </remarks>
     <related type="Article" href="https://www.rfc-editor.org/rfc/rfc9000.html#name-connections">RFC 9000: Connections</related>
+    <related type="ExternalDocumentation" href="/dotnet/fundamentals/networking/quic/quic-overview#quiclistener">Guidelines for using QuicListener</related>
   </Docs>
   <Members>
     <Member MemberName="AcceptConnectionAsync">

xml/System.Net.Quic/QuicStream.xml

@@ -30,6 +30,7 @@ Apart from a stream API, <see cref="T:System.Net.Quic.QuicStream" /> also expose
 
 <list type="bullet"><item><term><see cref="M:System.Net.Quic.QuicStream.WriteAsync(System.ReadOnlyMemory{System.Byte},System.Boolean,System.Threading.CancellationToken)" /></term><description>Closes the writing side of the stream as a single operation with the write itself.</description></item><item><term><see cref="M:System.Net.Quic.QuicStream.CompleteWrites" /></term><description>Closes the writing side of the stream.</description></item><item><term><see cref="M:System.Net.Quic.QuicStream.Abort(System.Net.Quic.QuicAbortDirection,System.Int64)" /></term><description>Aborts either the writing or the reading side of the stream.</description></item><item><term><see cref="M:System.Net.Quic.QuicStream.WritesClosed" /></term><description>Returns a <see cref="T:System.Threading.Tasks.Task" /> that will complete when the stream writing side has been closed (gracefully or abortively).</description></item><item><term><see cref="P:System.Net.Quic.QuicStream.ReadsClosed" /></term><description>Returns a <see cref="T:System.Threading.Tasks.Task" /> that will complete when the stream reading side has been closed (gracefully or abortively).</description></item></list></remarks>
     <related type="Article" href="https://www.rfc-editor.org/rfc/rfc9000.html#name-streams">RFC 9000: Streams</related>
+    <related type="ExternalDocumentation" href="/dotnet/fundamentals/networking/quic/quic-overview#quicstream">Guidelines for using QuicStream</related>
   </Docs>
   <Members>
     <Member MemberName="Abort">

xml/ns-System.Net.Quic.xml

@@ -2,5 +2,6 @@
   <Docs>
     <summary>Contains types that implement the QUIC protocol specified by RFC 9000.</summary>
     <remarks>To be added.</remarks>
+    <related type="ExternalDocumentation" href="/dotnet/fundamentals/networking/quic/quic-overview">QUIC in .NET</related>
   </Docs>
 </Namespace>