Update names of notebooks in TOC

Author: santisoler

myst.yml

@@ -110,11 +110,11 @@ project:
       - file: notebooks/time-domain-em/inv_tdem_1d.ipynb
     - title: Joint Inversion
       children:
-        - file: notebooks/11-joint-inversion/plot_inv_3_cross_gradient_pf.ipynb
+        - file: notebooks/joint-inversion/plot_inv_3_cross_gradient_pf.ipynb
     - title: PGI Inversion
       children:
-        - file: notebooks/12-pgi-inversion/plot_inv_1_joint_pf_pgi_full_info_tutorial.ipynb
-        - file: notebooks/12-pgi-inversion/plot_inv_2_joint_pf_pgi_no_info_tutorial.ipynb
+        - file: notebooks/pgi/plot_inv_1_joint_pf_pgi_full_info_tutorial.ipynb
+        - file: notebooks/pgi/plot_inv_2_joint_pf_pgi_no_info_tutorial.ipynb
 
 site:
   template: book-theme