Update TimePosition struct documentation

distrho/DistrhoPlugin.hpp

@@ -528,7 +528,8 @@ struct MidiEvent {
    The @a playing and @a frame values are always valid.@n
    BBT values are only valid when @a bbt.valid is true.
 
-   This struct is inspired by the JACK Transport API.
+   This struct is inspired by the JACK Transport API.@n
+   - [JACK-AUDIO-CONNECTION-KIT: jack_position_t Struct Reference](https://jackaudio.org/api/structjack__position__t.html)
  */
 struct TimePosition {
    /**
@@ -568,7 +569,8 @@ struct TimePosition {
        /**
           Current tick within beat.@n
           Should always be >= 0 and < @a ticksPerBeat.@n
-          The first tick is tick '0'.
+          The first tick is tick '0'.@n
+          The value indicates the closest tick from the start of current audio buffer.
         */
         int32_t tick;