[Restaurant] update transcript and data uri code (#2582)

Author: xieofxie

docs/_docs/skills/samples/experimental.md

@@ -554,6 +554,8 @@ Here is an example of an event returned by the Phone skill:
 
 The [Restaurant Booking skill]({{site.repo}}/tree/master/skills/src/csharp/experimental/restaurantbooking) provides a simple restaurant booking experience guiding the user through booking a table and leverages Adaptive Cards throughout to demonstrate how Speech, Text and UX can be combined for a compelling user experience. No integration to restaurant booking services exists at this time so is simulated with static data for testing purposes.
 
+An example transcript file demonstrating the Skill in action can be found [here]({{site.baseurl}}/assets/transcripts/skills-restaurantbooking.transcript), you can use the Bot Framework Emulator to open transcripts.
+
 ![Restaurant Example]({{site.baseurl}}/assets/images/skills-restaurant-transcript.png)
 
 ### Weather Skill