add lecture link

Author: weiguangcui

teaching.md

@@ -4,7 +4,7 @@ title: Teaching
 subtitle: Teaching and Supervising
 ---
 
-[Advanced Cosmology](https://WeiguangCui@bitbucket.org/WeiguangCui/lss-adco.git)
+[Advanced Cosmology](https://WeiguangCui@bitbucket.org/WeiguangCui/lss-adco.git) and [Lecture Notes](https://docs.google.com/presentation/d/17qUGVQ1j_dT-uPJf0pZhPLHXjF-NybtQxoSQRYmt-LI/edit?usp=sharing)
 
 [Computational Astrophysics](https://weiguangcui.github.io/Computational_Astrophysics/)