Add final newline to CLI output

src/main_ghostty.zig

@@ -91,6 +91,7 @@ pub fn main() !MainReturn {
             \\
             \\We don't have proper help output yet, sorry! Please refer to the
             \\source code or Discord community for help for now. We'll fix this in time.
+	    \\
         ,
             .{},
         );