Docs - improve examples for midi_clock_beat

Author: samaaron

app/server/ruby/lib/sonicpi/lang/midi.rb

@@ -1415,8 +1415,9 @@ def midi_clock_beat(*args)
 The MIDI specification requires 24 clock tick events to be sent per beat. These can either be sent manually using `midi_clock_tick` or all 24 can be scheduled in one go using this fn. `midi_clock_beat` will therefore schedule for 24 clock ticks to be sent linearly spread over duration beats. This fn will automatically take into account the current BPM and any `time_warp`s.
 ",
           examples:       [
-        "midi_clock_beat #=> Send 24 clock ticks over a period of 1 beat",
-        "midi_clock_beat 0.5 #=> Send 24 clock ticks over a period of 0.5 beats",
+        "midi_clock_beat #=> Send 24 clock ticks over a period of 1 beat to all connected MIDI devices",
+        "midi_clock_beat 0.5 #=> Send 24 clock ticks over a period of 0.5 beats to all connected MIDI devices",
+        "midi_clock_beat port: \"moog_subphatty\" #=> Send 24 clock ticks over a period of 1 beat to just the MIDI port with name moog_subphatty",
         "
 live_loop :clock do  # Create a live loop which continually sends out MIDI clock
   midi_clock_beat    # events at the current BPM