Correct trailing brace in transformWhile docs. (#3290)

diff --git a/kotlinx-coroutines-core/common/src/flow/operators/Limit.kt b/kotlinx-coroutines-core/common/src/flow/operators/Limit.kt
index 734464b..1b8abad 100644
--- a/kotlinx-coroutines-core/common/src/flow/operators/Limit.kt
+++ b/kotlinx-coroutines-core/common/src/flow/operators/Limit.kt
@@ -109,7 +109,6 @@
  *         emit(progress) // always emit progress
  *         !progress.isDone() // continue while download is not done
  *     }
- * }
  * ```
  */
 public fun <T, R> Flow<T>.transformWhile(