add Substrait slides (#30)

Author: carlosmalt

content/post/20230718-aug17/agenda.csv

@@ -9,7 +9,7 @@ Time,Title,Speaker(s)
 **1-2:05pm**,**Session 2**,
 1-1:20pm,[Contemplating a new Compute-Memory Hierarchy through the lens of an Acceleration Programming Interface](/talks/20230817/pankaj.mehra/),"[Pankaj Mehra](/author/pankaj-mehra/) (UCSC, Elephance Memory)"
 1:20-1:35pm,[Apache Arrow](https://arrow.apache.org/),[Ian Cook](/author/ian-cook) (Voltron Data)
-1:35-1:50pm,[Substrait](https://substrait.io),[Jacques Nadeau](/author/jacques-nadeau) (Sundeck)
+1:35-1:50pm,[Substrait - Engine & Language Independent Data Compute Instructions](https://substrait.io) ([slides](https://docs.google.com/presentation/d/1TPU0YGFoSbguh2AfZO2XHU735LfX5kFuPT08VeEU9zQ/edit#slide=id.g1476627d6f9_0_213)),[Jacques Nadeau](/author/jacques-nadeau) (Sundeck)
 1:50-2:05pm,[Kinetic Open Storage Update](/talks/20230817/philip.kufeldt),[Philip Kufeldt](/author/philip-kufeldt)
 **2:05-2:20pm**,**Break** (refreshments provided),
 **2:20-3.05pm**,**Session 3**,