[wwwdocs] [GCC13] Mention Intel __bf16 support in AVX512BF16 intrinsics.

[Kong, Lingling via Gcc-patches]

Hi

The patch is for mention Intel __bf16 support in AVX512BF16 intrinsics.
Ok for master ?

Thanks,
Lingling

---
 htdocs/gcc-13/changes.html | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/htdocs/gcc-13/changes.html b/htdocs/gcc-13/changes.html index 
7c6bfa6e..cd0282f1 100644
--- a/htdocs/gcc-13/changes.html
+++ b/htdocs/gcc-13/changes.html
@@ -230,6 +230,8 @@ a work-in-progress.</p>
   <li>For both C and C++ the <code>__bf16</code> type is supported on
       x86 systems with SSE2 and above enabled.
   </li>
+  <li>Use <code>__bf16</code> type for AVX512BF16 intrinsics.
+  </li>
 </ul>
 
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