opensm.8.in: Update email address

Signed-off-by: Hal Rosenstock <hal.rosenstock@gmail.com>

diff --git a/opensm/man/opensm.8.in b/opensm/man/opensm.8.in
index 5c08de9..3000eaf 100644
--- a/opensm/man/opensm.8.in
+++ b/opensm/man/opensm.8.in
@@ -994,7 +994,7 @@ default prefix routes file.
 .SH AUTHORS
 .TP
 Hal Rosenstock
-.RI < hal@xsigo.com >
+.RI < hal.rosenstock@gmail.com >
 .TP
 Sasha Khapyorsky
 .RI < sashak@voltaire.com >
