docs: fix syntax to disable exports entries added automatically by xCAT
@@ -15,8 +15,8 @@ example configuration.
[sms](*\#*) echo "${sms_ip}:/opt/ohpc/pub /opt/ohpc/pub nfs nfsvers=3,nodev 0 0" >> $CHROOT/etc/fstab
# Disable /tftpboot and /install export entries
-[sms](*\#*) perl -pi -e "s/tftpboot/#tftpboot/" /etc/exports
-[sms](*\#*) perl -pi -e "s/install/#install/" /etc/exports
+[sms](*\#*) perl -pi -e "s|/tftpboot|#/tftpboot|" /etc/exports
+[sms](*\#*) perl -pi -e "s|/install|#/install|" /etc/exports
# Export /home and OpenHPC public packages from master server
[sms](*\#*) echo "/home *(rw,no_subtree_check,fsid=10,no_root_squash)" >> /etc/exports
