Remove training announcement and add webinar recording info.

Refs idaholab#15461

modules/doc/content/upcoming_training.md

@@ -1,5 +1,5 @@
 ## Upcoming Training Events
 
-- [MOOSE Training Workshop (webinar), June 9 - 10, 2020 8:00am to 4:00pm MDT](https://attendee.gotowebinar.com/register/3351154618519053325)
+- There are no upcoming MOOSE training events, but please refer to the [users](https://groups.google.com/forum/#!forum/moose-users) and [announcement](https://groups.google.com/forum/#!forum/moose-announce) groups for further information about future trainings!
 
-  After registering, you will receive a confirmation email containing information about joining the webinar. The schedule can be found [here](https://docs.google.com/document/d/1HtIUHOPcaZJR1fJPHdJaPugvntefAVNEX8IzDlDe8qI/edit?usp=sharing).
+- The recording for the recent MOOSE Training Webinar (June 9 - 10, 2020) can be found on YouTube [here](http://youtube.com/watch?v=2tJwBsYaLaI). You can find in the description of the video a summary that includes the covered sections, the time in the recording associated with each section, and the archived slide content associated with each section. We look forward to hosting more virtual workshops in the future and would like to thank the participants for their time and for their questions!