fix(command-not-found): remove invalid argument for PackageKit (#9876)
`pk-command-not-found` doesn't accept `--` as an argument. This is what happens when `--` is the first argument:
```
$ gem
zsh: --: command not found...
```
Diff
1diff --git a/plugins/command-not-found/command-not-found.plugin.zsh b/plugins/command-not-found/command-not-found.plugin.zsh
2index cbf9a0a8e5c2a67fdcea9b5a49cb4cbb89d0674d..3ec13429cdfe02bcda74354fd395814e7f7881a3 100644
3--- a/plugins/command-not-found/command-not-found.plugin.zsh
4+++ b/plugins/command-not-found/command-not-found.plugin.zsh
5@@ -38,7 +38,7 @@ fi
6 if [[ -x /usr/libexec/pk-command-not-found ]]; then
7 command_not_found_handler() {
8 if [[ -S /var/run/dbus/system_bus_socket && -x /usr/libexec/packagekitd ]]; then
9- /usr/libexec/pk-command-not-found -- "$@"
10+ /usr/libexec/pk-command-not-found "$@"
11 return $?
12 fi
13