Add links to the developer guide in some READMEs

PiperOrigin-RevId: 248221982

library/dash/README.md

@@ -6,7 +6,9 @@ play DASH content, instantiate a `DashMediaSource` and pass it to
 
 ## Links ##
 
+* [Developer Guide][].
 * [Javadoc][]: Classes matching `com.google.android.exoplayer2.source.dash.*`
   belong to this module.
 
+[Developer Guide]: https://exoplayer.dev/dash.html
 [Javadoc]: https://exoplayer.dev/doc/reference/index.html

library/hls/README.md

@@ -5,7 +5,9 @@ instantiate a `HlsMediaSource` and pass it to `ExoPlayer.prepare`.
 
 ## Links ##
 
+* [Developer Guide][].
 * [Javadoc][]: Classes matching `com.google.android.exoplayer2.source.hls.*`
   belong to this module.
 
+[Developer Guide]: https://exoplayer.dev/hls.html
 [Javadoc]: https://exoplayer.dev/doc/reference/index.html

library/smoothstreaming/README.md

@@ -5,8 +5,10 @@ instantiate a `SsMediaSource` and pass it to `ExoPlayer.prepare`.
 
 ## Links ##
 
+* [Developer Guide][].
 * [Javadoc][]: Classes matching
   `com.google.android.exoplayer2.source.smoothstreaming.*` belong to this
   module.
 
+[Developer Guide]: https://exoplayer.dev/smoothstreaming.html
 [Javadoc]: https://exoplayer.dev/doc/reference/index.html

library/ui/README.md

@@ -4,7 +4,9 @@ Provides UI components and resources for use with ExoPlayer.
 
 ## Links ##
 
+* [Developer Guide][].
 * [Javadoc][]: Classes matching `com.google.android.exoplayer2.ui.*`
   belong to this module.
 
+[Developer Guide]: https://exoplayer.dev/ui-components.html
 [Javadoc]: https://exoplayer.dev/doc/reference/index.html