feat: refactor setup completion script

task

@@ -7,7 +7,6 @@ help-table() {
     local max_cmd=7 max_opt=6 max_desc=11
 
     rows+=("Command|Option|Description")
-    rows+=("all||Run all tasks.")
     rows+=("build-11ty||Build the 11ty website.")
     rows+=("build-image|[output]|Build Docker image with buildx.")
     rows+=("dev-11ty||Run 11ty server.")