Update README.md

README.md

@@ -17,4 +17,4 @@ A updated version will be pushed by ~~the end of the week~~ monday the 18th octo
 
 ### 2021/10/19 Lecture on OpenMP in the morning. Afternoon: TD on OpenMP + some advanced features
 
-I hope to put the slides today in the evening.
+[Slides: OpenMP](3-openmp.pdf)