Fix up release notes file

Bug: skia:
Change-Id: I124abbb54f13e70e5d9c6a71f43cea5adf0ce49a
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/250038
Auto-Submit: Heather Miller <hcm@google.com>
Reviewed-by: Hal Canary <halcanary@google.com>
Commit-Queue: Hal Canary <halcanary@google.com>
diff --git a/RELEASE_NOTES.txt b/RELEASE_NOTES.txt
index b993745..af2be25 100644
--- a/RELEASE_NOTES.txt
+++ b/RELEASE_NOTES.txt
@@ -4,9 +4,13 @@
 
 * * *
 
-Milestone 79
+Milestone 80
 
-  [Insert new notes here.]
+<Insert new notes here- top is most recent.>
+
+* * *
+
+Milestone 79
 
   * SkTextBlob::Iter to discover the glyph indices and typefaces in each run
     https://skia-review.googlesource.com/246296
@@ -72,9 +76,6 @@
 
 Milestone 78
 
-  * Added RELEASE_NOTES.txt file
-    https://review.skia.org/229760
-
   * SkDrawLooper is no longer supported in SkPaint or SkCanvas.
     https://review.skia.org/230579
     https://review.skia.org/231736
@@ -152,3 +153,6 @@
     https://review.skia.org/238856
 
   * Use GL_QCOM_TILED_RENDERING to explicitly discard stencil
+
+  * Added RELEASE_NOTES.txt file
+    https://review.skia.org/229760