Add doc for trimPathEnd being animatable

The docs only mentioned trimPathStart and trimPathOffset, but
trimPathEnd is also possible to animate.

Issue #72057305 Public AnimatedVectorDrawable documentation implies that trimPathEnd property is not animatable
Test: N/A (doc fix only)

Change-Id: Ida2eed014b1079030074cb04343b8d0e423c148a
diff --git a/OWNERS b/OWNERS
index 0de3634..3126105 100644
--- a/OWNERS
+++ b/OWNERS
@@ -1,6 +1,7 @@
 adamp@google.com
 alanv@google.com
 aurimas@google.com
+chet@google.com
 ccraik@google.com
 clarabayarri@google.com
 ilake@google.com