Fix table formatting in MultiFrameImageStreamCompleter doc - 2nd attempt (#13052)

packages/flutter/lib/src/services/image_stream.dart

diff --git a/packages/flutter/lib/src/services/image_stream.dart b/packages/flutter/lib/src/services/image_stream.dart
index 91843ba..a50c9a7 100644
--- a/packages/flutter/lib/src/services/image_stream.dart
+++ b/packages/flutter/lib/src/services/image_stream.dart
@@ -312,14 +312,14 @@
 ///
 /// See the following timeline example:
 ///
-///   | Time | Event                                      | Comment                   |
-///   |------|--------------------------------------------|---------------------------|
-///   | t1   | App frame scheduled (image frame A posted) |                           |
-///   | t2   | App frame scheduled                        |                           |
-///   | t3   | App frame scheduled                        |                           |
-///   | t4   | Image frame B decoded                      |                           |
-///   | t5   | App frame scheduled                        | t5 - t1 < frameB_duration | 
-///   | t6   | App frame scheduled (image frame B posted) | t6 - t1 > frameB_duration |
+///     | Time | Event                                      | Comment                   |
+///     |------|--------------------------------------------|---------------------------|
+///     | t1   | App frame scheduled (image frame A posted) |                           |
+///     | t2   | App frame scheduled                        |                           |
+///     | t3   | App frame scheduled                        |                           |
+///     | t4   | Image frame B decoded                      |                           |
+///     | t5   | App frame scheduled                        | t5 - t1 < frameB_duration |
+///     | t6   | App frame scheduled (image frame B posted) | t6 - t1 > frameB_duration |
 ///
 class MultiFrameImageStreamCompleter extends ImageStreamCompleter {
   /// Creates a image stream completer.