Fix presense and help of module arguments.

See github issue #192

modules/autoattach.cpp

@@ -248,6 +248,8 @@ private:
 
 template<> void TModInfo<CChanAttach>(CModInfo& Info) {
 	Info.SetWikiPage("autoattach");
+	Info.SetHasArgs(true);
+	Info.SetArgsHelpText("List of channel masks and channel masks with ! before them.");
 }
 
 USERMODULEDEFS(CChanAttach, "Reattaches you to channels on activity.")