Fix ndk-macro link (#7027)

# Objective

[ndk-glue](https://github.com/rust-mobile/ndk-glue)  has been split from `android-ndk-rs` into a separate repository.

Author: jinleili

crates/bevy_derive/src/bevy_main.rs

@@ -10,7 +10,7 @@ pub fn bevy_main(_attr: TokenStream, item: TokenStream) -> TokenStream {
     );
 
     TokenStream::from(quote! {
-        // use ndk-glue macro to create an activity: https://github.com/rust-windowing/android-ndk-rs/tree/master/ndk-macro
+        // use ndk-glue macro to create an activity: https://github.com/rust-mobile/ndk-glue/tree/main/ndk-macro
         #[cfg(target_os = "android")]
         #[cfg_attr(target_os = "android", bevy::ndk_glue::main(backtrace = "on", ndk_glue = "bevy::ndk_glue"))]
         fn android_main() {