Missed a couple of places that hard code J for the newline key (#6853)

Signed-off-by: Trae Robrock <trobrock@gmail.com>

crates/goose-cli/src/session/completion.rs

@@ -390,7 +390,11 @@ impl Hinter for GooseCompleter {
     fn hint(&self, line: &str, _pos: usize, _ctx: &Context<'_>) -> Option<Self::Hint> {
         // Only show hint when line is empty
         if line.is_empty() {
-            Some("Press Enter to send, Ctrl-J for new line".to_string())
+            let newline_key = super::input::get_newline_key().to_ascii_uppercase();
+            Some(format!(
+                "Press Enter to send, Ctrl-{} for new line",
+                newline_key
+            ))
         } else {
             None
         }

crates/goose-cli/src/session/input.rs

@@ -83,9 +83,12 @@ pub fn get_input(
         return Ok(InputResult::Message(message));
     }
 
-    // Ensure Ctrl-J binding is set for newlines
+    let newline_key = get_newline_key();
     editor.bind_sequence(
-        rustyline::KeyEvent(rustyline::KeyCode::Char('j'), rustyline::Modifiers::CTRL),
+        rustyline::KeyEvent(
+            rustyline::KeyCode::Char(newline_key),
+            rustyline::Modifiers::CTRL,
+        ),
         rustyline::EventHandler::Simple(rustyline::Cmd::Newline),
     );