Update timings

Author: geographika

workshop/content/docs/introduction/introduction.md

@@ -36,8 +36,9 @@ These can be adapted based on the needs of the participants.
 - 1h30 - 2h00 - Inputs
 - Break
 - 2h00 - 3h00 - Outputs
-- 3h00 - 3h30 - Advanced topics
-- 3h30 - 4h00 - Custom Mapfile creation, questions, and conclusions
+- 3h00 - 3h15 - Brief Overview of Advanced topics
+- 3h15 - 3h45 - Custom Mapfile creation
+- 3h45 - 4h00 - Questions and conclusions
 
 ## Test the Docker Compose config