docs: update 11.0 stable release date (#25073)

docs/tutorial/electron-timelines.md

@@ -16,5 +16,6 @@
 | 7.0.0 | 2019-08-01 | 2019-10-22 | M78 | v12.8 |
 | 8.0.0 | 2019-10-24 | 2020-02-04 | M80 | v12.13 |
 | 9.0.0 | 2020-02-06 | 2020-05-19 | M83 | v12.14 |
-| 10.0.0 | 2020-05-21 | 2020-08-25 | M85 | v12.x |
-| 11.0.0 | TBD | TBD | TBD| TBD |
+| 10.0.0 | 2020-05-21 | 2020-08-25 | M85 | v12.16 |
+| 11.0.0 | 2020-08-27 | 2020-11-17 | M87 | v12.x |
+| 12.0.0 | TBD | TBD | TBD | TBD |