Fix build

Author: rzikm

xml/System.Net.Security/SslClientAuthenticationOptions.xml

@@ -194,7 +194,6 @@
       </ReturnValue>
       <Docs>
         <summary>Gets or sets an optional customized policy for remote certificate validation. If not <see langword="null" />, <see cref="P:System.Net.Security.SslClientAuthenticationOptions.CertificateRevocationCheckMode" /> and <see cref="P:System.Net.Security.SslClientAuthenticationOptions.ClientCertificateContext" />.<see cref="P:System.Net.Security.SslCertificateContext.Trust" /> are ignored.</summary>
-</summary>
         <value>To be added.</value>
         <remarks>To be added.</remarks>
       </Docs>