www.freebsd.org/releng: Mention releng/12.2 and releng/11.4

- releng/12.2 branch is created on base r365618
- releng/11.4 is handed over to so@ in base r362501

Approved by:	bcr
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D26433

en_US.ISO8859-1/htdocs/releng/index.xml

@@ -104,6 +104,13 @@
       <td>Development branch for FreeBSD 12-STABLE.</td>
     </tr>
 
+    <tr>
+      <td><tt>releng/12.2</tt></td>
+      <td>Frozen</td>
+      <td>&contact.re;</td>
+      <td>FreeBSD 12.2 supported errata fix branch.</td>
+    </tr>
+
     <tr>
       <td><tt>releng/12.1</tt></td>
       <td>Frozen</td>
@@ -128,7 +135,7 @@
     <tr>
       <td><tt>releng/11.4</tt></td>
       <td>Frozen</td>
-      <td>&contact.re;</td>
+      <td>&contact.so;</td>
       <td>FreeBSD 11.4 supported errata fix branch.</td>
     </tr>