Fix openssl.com htaccess

Redirect works with prefixes.  If only / should be redirected and not
any sub-path, use RedirectMatch

Reviewed-by: Tim Hudson <tjh@openssl.org>
(Merged from openssl/openssl#81)

Author: levitte

.htaccess.openssl.com

@@ -1,4 +1,5 @@
 # -*- Apache -*-
-Redirect permanent / https://www.openssl.org/community/contacts.html
 Redirect permanent /verifycd.html https://www.openssl.org/docs/fips/verifycd.html
+
+RedirectMatch permanent "^/$" https://www.openssl.org/community/contacts.html
 RedirectMatch permanent "^(.*)$" "https://www.openssl.org$1"