Update state_agg docs

Author: atovpeko

api/_hyperfunctions/state_agg/timeline_agg.md

@@ -17,7 +17,7 @@ hyperfunction:
 api_details:
   summary: >
     Aggregate state data into a state aggregate to track state transitions.
-    Unlike [`state_agg`](/api/latest/hyperfunctions/state-tracking/state_agg/),
+    Unlike [`compact_state_agg`](/api/latest/hyperfunctions/state-tracking/compact_state_agg/),
     which only stores durations, `state_agg` also stores the timestamps of
     state transitions.
   signatures: