Fix hello_world (why is that command even still in this?)

src/command_definitions.rs

@@ -17,7 +17,7 @@ pub fn def_hello_world() -> (discord::ApplicationCommand, Option<String>) {
 // hello-world action when someone uses the command on Discord
 pub fn hello_world(interaction: &Interaction) -> InteractionResponse {
     let cmd = interaction.cmd().unwrap();
-    InteractionResponse::ChannelMessage {
+    InteractionResponse::ChannelMessageWithSource {
         data: Some(InteractionApplicationCommandCallbackData {
             tts: false,
             content: format!("Hello {}!", cmd.member.nick.unwrap_or(cmd.member.user.unwrap().username)),