Adding Euclid notebooks to rendering

Author: bsipocz

index.md

@@ -49,6 +49,20 @@ caption: Euclid Early Release Observations
 ---
 
 tutorials/euclid_access/Euclid_ERO
+
+```
+
+```{toctree}
+---
+maxdepth: 1
+caption: Euclid Quick Release 1
+---
+
+tutorials/euclid_access/1_Euclid_intro_MER_images
+tutorials/euclid_access/2_Euclid_intro_MER_catalog
+tutorials/euclid_access/3_Euclid_intro_1D_spectra
+tutorials/euclid_access/5_Euclid_intro_SPE_catalog
+
 ```
 
 ## Interactive visualization in Python with Firefly