fixed toc, it was the comment lines

Author: MarkMelotto

book/_toc.yml

@@ -26,8 +26,8 @@ parts:
     - file: some_content/different_models.md
       sections:
       - file: some_content/models/external.md
-#      - external: https://github.com/eWaterCycle/ewatercycle-hbv/blob/main/docs/example_model_run_HBV_camels_catchment_ERA5_forcing.ipynb
-#      - external: https://github.com/eWaterCycle/ewatercycle-pcrglobwb/blob/main/docs/Irrigation.ipynb
+      - external: https://github.com/eWaterCycle/ewatercycle-hbv/blob/main/docs/example_model_run_HBV_camels_catchment_ERA5_forcing.ipynb
+      - external: https://github.com/eWaterCycle/ewatercycle-pcrglobwb/blob/main/docs/Irrigation.ipynb
       - file: some_content/models/wflow.ipynb
 
     - file: some_content/workflows.md