Update README.md

Author: hannesdelbeke

README.md

@@ -3,10 +3,12 @@
 ![notes](https://github.com/user-attachments/assets/8cdacee6-b105-4f24-bd0b-7d21048ee7ba)
 
 > [!Warning]
+> ### 1-column layout limitations 
 > when in 2 panel mode, only folders in the right (sub-folders & assets) panel show notes on selection in the inspector.  
 > when selecting a folder in the left (folder only) panel the inspector doesn't update, because unity doesn't register a selection change.  
 > ![image](https://github.com/user-attachments/assets/9d3b3b2b-b0dc-484b-8208-ee0b19551b0d)  
 > _left red panel, no folder notes support. right green panel, supports folder notes_
 >  
+> ### swap to 2-column layout 
 > You can swap your Project tab to 1 panel view mode, by clicking on the vertical ...  
 > ![image](https://github.com/user-attachments/assets/6bec06f7-fbe3-49a7-a756-be7000eb2337)