change toc

Author: HumphreyYang

lectures/_toc.yml

@@ -35,6 +35,7 @@ parts:
   - file: olg
   - file: markov_chains_I
   - file: markov_chains_II
+  - file: eigen_II
   - file: commod_price
 - caption: Optimization
   numbered: true
@@ -46,7 +47,6 @@ parts:
 - caption: Modeling in Higher Dimensions
   numbered: true
   chapters:
-  - file: eigen_II
   - file: input_output
   - file: lake_model
   - file: asset_pricing