Merge from vscode 709a07d51919d3266ca71699c6ddfb2d3547c0e1 (#6575)

src/vs/vscode.d.ts

@@ -5454,7 +5454,7 @@ declare module 'vscode' {
 		 * from `tasks.json` files as well as tasks from task providers
 		 * contributed through extensions.
 		 *
-		 * @param filter a filter to filter the return tasks.
+		 * @param filter Optional filter to select tasks of a certain type or version.
 		 */
 		export function fetchTasks(filter?: TaskFilter): Thenable<Task[]>;