[release-branch.go1.14] doc/go1.14: crypto/tls.Config.NameToCertifica…

…te is deprecated

Also crypto/tls.Config.BuildNameToCertificate.

Note that this field and method were deprecated in the Go 1.14 release,
so this change is to the 1.14 release notes.

For #37626
Fixes #38030

Change-Id: If8549bc746f42a93f1903439e1b464b3e81e2c19
Reviewed-on: https://go-review.googlesource.com/c/go/+/240005
Reviewed-by: Filippo Valsorda <filippo@golang.org>
(cherry picked from commit 186e61f)
Reviewed-on: https://go-review.googlesource.com/c/go/+/240011

doc/go1.14.html

@@ -466,7 +466,15 @@ <h3 id="minor_library_changes">Minor changes to the library</h3>
       certificate, and letting the package automatically select the best one.
       Note that the performance of this selection is going to be poor unless the
       <a href="/pkg/crypto/tls/#Certificate.Leaf"><code>Certificate.Leaf</code></a>
-      field is set.
+      field is set. The
+      <a href="/pkg/crypto/tls/#Config.NameToCertificate"><code>Config.NameToCertificate</code></a>
+      field, which only supports associating a single certificate with
+      a give name, is now deprecated and should be left as <code>nil</code>.
+      Similarly the
+      <a href="/pkg/crypto/tls/#Config.BuildNameToCertificate"><code>Config.BuildNameToCertificate</code></a>
+      method, which builds the <code>NameToCertificate</code> field
+      from the leaf certificates, is now deprecated and should not be
+      called.
     </p>
 
     <p><!-- CL 175517 -->