packages: website: release: help: fix program name.

The GNU Coding Standards has the following in the chapter "4.8.1
--version"[1]:
    The program’s name should be a constant string; don’t compute it
    from argv[0]. The idea is to state the standard or canonical name
    for the program, not its file name. There are other ways to find
    out the precise file name where a command is found in PATH.
[1]https://www.gnu.org/prep/standards/standards.html#g_t_002d_002dversion

This fixes that.

Signed-off-by: Denis 'GNUtoo' Carikli <GNUtoo@cyberdimension.org>
Acked-by: Adrien Bourmault <neox@gnu.org>

resources/packages/website/release

@@ -16,7 +16,7 @@
 
 . resources/scripts/misc/sysexits.sh
 
-progname="resources/packages/website/release"
+progname="release"
 
 set -e