fix references

Author: habema

docs/running_agents.md

@@ -89,7 +89,7 @@ async def main():
 
 ### Automatic conversation management with Sessions
 
-For a simpler approach, you can use [Sessions](sessions.md) to automatically handle conversation history without manually calling `.to_input_list()`:
+For a simpler approach, you can use [Sessions](sessions/index.md) to automatically handle conversation history without manually calling `.to_input_list()`:
 
 ```python
 from agents import Agent, Runner, SQLiteSession
@@ -119,7 +119,7 @@ Sessions automatically:
 -   Stores new messages after each run
 -   Maintains separate conversations for different session IDs
 
-See the [Sessions documentation](sessions.md) for more details.
+See the [Sessions documentation](sessions/index.md) for more details.
 
 ## Long running agents & human-in-the-loop