Merge pull request #4971 from abeln/dotty-internals-3

Add link to Dotty internals talk on denotations

Author: allanrenucci

docs/docs/resources/talks.md

@@ -23,6 +23,9 @@ This is a recorded meeting between EPFL and Waterloo, where we introduce first n
 - (Mar 21, 2017) [Dotty Internals 2: Types](https://www.youtube.com/watch?v=3gmLIYlGbKc) by [Martin Odersky](http://twitter.com/odersky) and [Dmitry Petrashko](http://twitter.com/darkdimius).
 This is a recorded meeting between EPFL and Waterloo, where we introduce how types are represented inside Dotty.
 
+- (Jun 15, 2017) [Dotty Internals 3: Denotations](https://youtu.be/9iPA7zMRGKY) by [Martin Odersky](http://twitter.com/odersky) and [Dmitry Petrashko](http://twitter.com/darkdimius).
+This is a recorded meeting between EPFL and Waterloo, where we introduce denotations in Dotty.
+
 - (JVM Language Summit) [How do we make the Dotty compiler fast](https://www.youtube.com/watch?v=9xYoSwnSPz0) by [Dmitry Petrashko](http://twitter.com/darkdimius).
 [Dmitry Petrashko](http://twitter.com/darkdimius) gives a high-level introduction on what was done to make Dotty .