What is a bind added (dotnet#8778)

* What is a bind added

What is a bind added from https://learn.microsoft.com/en-us/previous-versions/windows/desktop/ldap/binding-to-an-ldap-server

* Update xml/System.DirectoryServices.Protocols/LdapConnection.xml

Co-authored-by: MSDN.WhiteKnight <35516665+MSDN-WhiteKnight@users.noreply.github.com>

Author: surfmuggle

xml/System.DirectoryServices.Protocols/LdapConnection.xml

@@ -333,7 +333,15 @@
       <Parameters />
       <Docs>
         <summary>The <see cref="M:System.DirectoryServices.Protocols.LdapConnection.Bind" /> method sends an LDAP bind using the current credentials.</summary>
-        <remarks>To be added.</remarks>
+        <remarks>
+          <format type="text/markdown"><![CDATA[
+## Remarks
+
+Binding is the step where the LDAP server authenticates the client and, if the client is successfully authenticated, allows the client access to the LDAP server based on that client's privileges.
+If a connection was created using `ldap_connect`, and if no binding function is called, on a LDAP v3 server, you run as anonymous.
+
+   ]]></format>
+    </remarks>
         <exception cref="T:System.ObjectDisposedException">The object handle is not valid.</exception>
         <exception cref="T:System.DirectoryServices.Protocols.LdapException">The error code returned by LDAP does not map to one of the <see cref="T:System.DirectoryServices.Protocols.ResultCode" /> enumeration error codes.</exception>
         <exception cref="T:System.InvalidOperationException">Either the <see cref="P:System.DirectoryServices.Protocols.DirectoryConnection.ClientCertificates" /> property specifies more than one client certificate to send for authentication, or the <see cref="P:System.DirectoryServices.Protocols.LdapConnection.AuthType" /> property is Anonymous and one or more credentials are supplied.</exception>