[syslinux-iso] oops! add missing )

Signed-off-by: Gerardo Exequiel Pozzi <vmlinuz386@yahoo.com.ar>

configs/syslinux-iso/overlay/etc/rc.conf

@@ -21,7 +21,7 @@ KEYMAP="$(kernel_cmdline keymap ${KEYMAP_DEFAULT})"
 CONSOLEFONT="$(kernel_cmdline consolefont ${CONSOLEFONT_DEFAULT})"
 CONSOLEMAP="$(kernel_cmdline consolemap ${CONSOLEMAP_DEFAULT})"
 USECOLOR="$(kernel_cmdline usecolor ${USECOLOR_DEFAULT})"
-VERBOSE="$(kernel_cmdline verbose ${VERBOSE_DEFAULT}"
+VERBOSE="$(kernel_cmdline verbose ${VERBOSE_DEFAULT})"
 
 MOD_AUTOLOAD="yes"
 MODULES=()