Fix incorrect statement on thread (un)safety in AStar class reference

doc/classes/AStar2D.xml

@@ -245,7 +245,7 @@
 			<description>
 				Returns an array with the points that are in the path found by AStar2D between the given points. The array is ordered from the starting point to the ending point of the path.
 				If there is no valid path to the target, and [param allow_partial_path] is [code]true[/code], returns a path to the point closest to the target that can be reached.
-				[b]Note:[/b] This method is not thread-safe. If called from a [Thread], it will return an empty array and will print an error message.
+				[b]Note:[/b] This method is not thread-safe; it can only be used from a single [Thread] at a given time. Consider using [Mutex] to ensure exclusive access to one thread to avoid race conditions.
 				Additionally, when [param allow_partial_path] is [code]true[/code] and [param to_id] is disabled the search may take an unusually long time to finish.
 			</description>
 		</method>

doc/classes/AStar3D.xml

@@ -284,7 +284,7 @@
 			<description>
 				Returns an array with the points that are in the path found by AStar3D between the given points. The array is ordered from the starting point to the ending point of the path.
 				If there is no valid path to the target, and [param allow_partial_path] is [code]true[/code], returns a path to the point closest to the target that can be reached.
-				[b]Note:[/b] This method is not thread-safe. If called from a [Thread], it will return an empty array and will print an error message.
+				[b]Note:[/b] This method is not thread-safe; it can only be used from a single [Thread] at a given time. Consider using [Mutex] to ensure exclusive access to one thread to avoid race conditions.
 				Additionally, when [param allow_partial_path] is [code]true[/code] and [param to_id] is disabled the search may take an unusually long time to finish.
 			</description>
 		</method>

doc/classes/AStarGrid2D.xml

@@ -98,7 +98,7 @@
 			<description>
 				Returns an array with the points that are in the path found by [AStarGrid2D] between the given points. The array is ordered from the starting point to the ending point of the path.
 				If there is no valid path to the target, and [param allow_partial_path] is [code]true[/code], returns a path to the point closest to the target that can be reached.
-				[b]Note:[/b] This method is not thread-safe. If called from a [Thread], it will return an empty array and will print an error message.
+				[b]Note:[/b] This method is not thread-safe; it can only be used from a single [Thread] at a given time. Consider using [Mutex] to ensure exclusive access to one thread to avoid race conditions.
 				Additionally, when [param allow_partial_path] is [code]true[/code] and [param to_id] is solid the search may take an unusually long time to finish.
 			</description>
 		</method>