Update changelog

CHANGELOG.md

@@ -22,12 +22,14 @@ All notable changes to Parlant will be documented here.
 - Support for union parameters ("T | None") in tool functions
 
 ### Changed
-- Fix 404 not being returned if a tool service isn't found
 - Made all stores thread-safe with reader/writer locks
-- Fixed having direct calls to asyncio.gather() instead of safe_gather()
 - Reverted GPT version for guideline connection proposer to 2024-08-06
 - Changed definition of causal connection to take the source's when statement into account. The connection proposer now assumes the source's condition is true when examining if it entails other guideline.
 
+### Fixed
+- Fix 404 not being returned if a tool service isn't found
+- Fix having direct calls to asyncio.gather() instead of safe_gather()
+
 ### Removed
 - Removed connection kind (entails / suggests) from the guideline connection proposer and all places downstream. the connection_kind argument is no longer needed or supported for all guideline connections.