fix(completions): prevent duplicate --help in top-level zsh completion

Author: ahmedelgabri

completions/git-wt.zsh

@@ -25,7 +25,8 @@ _git-wt() {
     _arguments -C \
         '(- *)'{-h,--help}'[Show help]' \
         '1: :->command' \
-        '*:: :->args'
+        '*:: :->args' \
+        && return
 
     case $state in
         command)