fix: masked the spin trigger http usage message

Signed-off-by: Dipankar Das <[email protected]>

crates/trigger/src/cli.rs

@@ -28,7 +28,7 @@ pub const SPIN_WORKING_DIR: &str = "SPIN_WORKING_DIR";
 
 /// A command that runs a TriggerExecutor.
 #[derive(Parser, Debug)]
-#[clap(next_help_heading = "TRIGGER OPTIONS")]
+#[clap(usage="spin [COMMAND] [OPTIONS]",next_help_heading = "TRIGGER OPTIONS")]
 pub struct TriggerExecutorCommand<Executor: TriggerExecutor>
 where
     Executor::RunConfig: Args,