[wwwdocs] gcc-12/changes.html: Document the RISC-V libstdc++ -latomic detection

[Gerald Pfeifer]

On Wed, 11 May 2022, Kito Cheng via Gcc-patches wrote:
> LGTM, I think document what we really did in GCC 12 is never too late :P

Totally. And thanks for doing this, Palmer.

I went ahead and made two editorial changes per the patch below
which I pushed.

Gerald

commit 87fb03bc6ce3e190ba74215a9aad5021e263185a
Author: Gerald Pfeifer <gerald@pfeifer.com>
Date:   Sun May 22 00:23:09 2022 +0200

    gcc-12: Editorial changes for RISC-V

diff --git a/htdocs/gcc-12/changes.html b/htdocs/gcc-12/changes.html
index 0eae78ff..3b94378e 100644
--- a/htdocs/gcc-12/changes.html
+++ b/htdocs/gcc-12/changes.html
@@ -817,8 +817,8 @@ function Multiply (S1, S2 : Sign) return Sign is
 	support architecture testing marco and <code>-march=</code> parsing.</li>
     <li>The option <code>-mtune=thead-c906</code> is added to tune for T-HEAD
 	c906 cores.</li>
-    <li>libstdc++'s no longer attempts to detect built-in atomics,
-	distributions that have out-of-tree workarounds for
+    <li>libstdc++ no longer attempts to detect built-in atomics.
+	Distributions that have out-of-tree workarounds for
 	<code>-latomic</code> should check their ABIs again.</li>
   </li>
 </ul>