Mention the 3.0 wiki page in the release announcement emails

Reviewed-by: Paul Dale <[email protected]>
(Merged from openssl#11593)

dev/release-aux/openssl-announce-pre-release.tmpl

@@ -8,13 +8,18 @@
    OpenSSL $series is currently in $label.
 
    OpenSSL $release_text has now been made available.  For details of
-   changes and known issues see the release notes at:
+   the changes, see the release notes at:
 
         https://www.openssl.org/news/openssl-$series-notes.html
 
    Note: This OpenSSL pre-release has been provided for testing ONLY.
    It should NOT be used for security critical purposes.
 
+   Specific notes on upgrading to OpenSSL $series from previous versions, as well
+   as known issues are available on the OpenSSL Wiki, here:
+
+        https://wiki.openssl.org/index.php/OpenSSL_$series
+
    The $label release is available for download via HTTPS and FTP from the
    following master locations (you can find the various FTP mirrors under
    https://www.openssl.org/source/mirror.html):

dev/release-aux/openssl-announce-release.tmpl

@@ -7,10 +7,15 @@
 
    The OpenSSL project team is pleased to announce the release of
    version $release of our open source toolkit for SSL/TLS.
-   For details of changes and known issues see the release notes at:
+   For details of the changes, see the release notes at:
 
         https://www.openssl.org/news/openssl-$series-notes.html
 
+   Specific notes on upgrading to OpenSSL $series from previous versions, as well
+   as known issues are available on the OpenSSL Wiki, here:
+
+        https://wiki.openssl.org/index.php/OpenSSL_$series
+
    OpenSSL $release is available for download via HTTPS and FTP from the
    following master locations (you can find the various FTP mirrors under
    https://www.openssl.org/source/mirror.html):