fix --wrappergroup

Was documented to work at command line, but didn't

diff --git a/ikiwiki.in b/ikiwiki.in
index 1a6d18a6089b8e98cb83433e1c5ada1a6f26c917..344b881489de4c31865a4abb610be4ddef2f0fa3 100755 (executable)
--- a/ikiwiki.in
+++ b/ikiwiki.in
@@ -40,6 +40,7 @@ sub getconfig () { #{{{
                        "post-commit" => \$config{post_commit},
                        "render=s" => \$config{render},
                        "wrappers!" => \$config{genwrappers},
+                       "wrappergroup=s" => \$config{wrappergroup},
                        "usedirs!" => \$config{usedirs},
                        "prefix-directives!" => \$config{prefix_directives},
                        "getctime" => \$config{getctime},