Add TUG 2021 talk to the README

README.md

@@ -44,12 +44,13 @@ For further information, consult one of the following:
     - [Using Markdown inside TeX documents][tb119],
     - [Markdown 2.7.0: Towards lightweight markup in TeX][tb124],
     - [Making Markdown into a Microwave Meal][tb129], and
-    - Markdown 2.10.0: LaTeX Themes & Snippets, Two Flavors of Comments, and LuaMetaTeX ([preprint][tb131-preprint], [slides][tb131-slides]).
+    - [Markdown 2.10.0: LaTeX Themes & Snippets, Two Flavors of Comments, and LuaMetaTeX][tb131-preprint].
 5. My journal articles published by [CSTUG][] (in Czech):
     - [Rendering Markdown inside TeX Documents][10.5300/2016-1-4/78], and
     - [Markdown 2.8.1: Boldly Unto the Throne of Lightweight Markup in TeX][10.5300/2020-1-2/48].
 6. My talks:
-    - [Five Years of Markdown in LaTeX: What, Why, How, and Whereto][pv212-fall2020] (in Czech).
+    - [Five Years of Markdown in LaTeX: What, Why, How, and Whereto][pv212-fall2020] (in Czech), and
+    - [Markdown 2.10.0: LaTeX Themes & Snippets, Two Flavors of Comments, and LuaMetaTeX][tb131-video].
 
  [overleaf-1]: https://www.overleaf.com/learn/latex/Articles/How_to_write_in_Markdown_on_Overleaf       "How to write in Markdown on Overleaf"
  [overleaf-2]: https://www.overleaf.com/learn/latex/Articles/Markdown_into_LaTeX_with_Style             "Markdown into LaTeX with Style"
@@ -64,6 +65,7 @@ For further information, consult one of the following:
 
  [tb131-preprint]: https://tug.org/tug2021/assets-arthur/pdf/novotny-tug2021-preprint.pdf  "Markdown 2.10.0: LaTeX Themes & Snippets, Two Flavors of Comments, and LuaMetaTeX"
  [tb131-slides]:   https://tug.org/tug2021/assets-arthur/pdf/tug2021-novotny-slides.pdf    "Markdown 2.10.0: LaTeX Themes & Snippets, Two Flavors of Comments, and LuaMetaTeX"
+ [tb131-video]:    https://www.youtube.com/watch?v=SZHIeevyo3U#t=1h41m                     "Markdown 2.10.0: LaTeX Themes & Snippets, Two Flavors of Comments, and LuaMetaTeX"
 
  [10.5300/2016-1-4/78]: https://bulletin.cstug.cz/pdf/2016-1-4.pdf#page=80 "Rendering Markdown inside TeX Documents"
  [10.5300/2020-1-2/48]: https://bulletin.cstug.cz/pdf/2020-1-2.pdf#page=50 "Markdown 2.8.1: Boldly Unto the Throne of Lightweight Markup in TeX"