add links to recordings

README.md

@@ -37,7 +37,8 @@ workshop materials
   Shared notes: https://gitlab.jsc.fz-juelich.de/hedgedoc/KDIIEn6uTN2Z3OnxEgMQLQ
 
 recordings
-: planned
+: day 1 : https://drive.google.com/file/d/18whxw3ucAAtKnLo1ogio2G-5rLugEV1o/view?usp=sharing
+  day 2 : https://drive.google.com/file/d/1mdSqyqeMt0qnmgikDozYncsyMAmsPuPu/view?usp=sharing
 
 ### Agenda:
 |               | Title                                            |